Pope Sergius IV (1009-1012)

The first Pope Peter who does not reign as Peter

Modern tradition records that Sergius IV was born Pietro. The practice of changing one's name at election already existed since John II, born Mercurius in 533, with a direct precedent: John XIV, born Pietro Canepanova and elected in 983, who had not reigned under the name Peter. At the beginning of the eleventh century the gesture became more stable. Sergius IV belongs to this transition: elected under the name Peter, he took another name when he became bishop of Rome.^[9][10]

The most probable reason is spiritual and institutional: the name Peter belongs to the Prince of the Apostles. The pope is his successor, not his double. The abstention is not a dogma, but it became a lasting Roman instinct. No reigning pope has taken the name Peter II.

The last pope before the Tusculan shift

Sergius IV was elected in a Rome where the Crescentii family still dominated. His predecessor John XVIII had already governed under this tutelage, to the point of ending — according to one catalogue of popes, taken up with caution by modern syntheses — in monastic retirement.^[11] Sergius IV himself never seems to have possessed solid temporal power. The Catholic Encyclopedia summarizes the situation in a few words: he checked the power of John Crescentius by strengthening the party favorable to the Germans.^[12]

This point matters. At his death, in May 1012, the Roman scene shifted. John Crescentius II died almost at the same time; the Tusculans regained the initiative and installed Benedict VIII, a member of their family. The pontificate of Sergius IV is therefore a hinge: the last Crescentian pope, just before a decade in which Benedict VIII, together with Emperor Henry II, would restore clearer political strength to the papacy.

The pope of monastic privileges

What materially survives from the pontificate of Sergius IV is not a great dogmatic letter, but a series of privileges. Patrologia Latina 139 — the great printed collection of Christian Latin writings, here in the 1853 Migne edition, without a modern critical apparatus — gathers sixteen items attributed to Sergius IV (numbered I to XVI) for fifteen place names: Parentium (Parenzo, in Istria), Scuria, Nonantola (near Modena), Cuxa (Saint-Michel, in the Conflent), Ripoll (Catalonia), Fenouillet (Saint-Pierre, in the Fenouillèdes), Canigou (Saint-Martin), Arles (the Sainte-Marie monastery, placed by the act in the Aspres valley), Montmajour (near Arles), Aix, Farfa (Latium), Bamberg (Bavaria), San Vincenzo al Volturno (Molise), Beaulieu (two acts), Salerno.^[13] The count is exact: the letter addressed to the archbishop of Aix (item X) concerns the same Montmajour affair as item IX, and Beaulieu receives two distinct acts (items XIV and XV) — sixteen items, then, for fifteen names.

This documentation is dry, but it speaks. It shows the pope as judge, protector and guarantor of stability. He confirms possessions, protects tithes, places monasteries under apostolic protection, recalls the authority of the canons, threatens disturbers with anathema, and defends religious houses against interference by bishops, patriarchs, lords or laymen.

In substance, the operative clause confirms by pontifical privilege “all the properties and possessions of the place”: “omnes proprietates sive possessiones ipsius loci [...] nostro confirmamus privilegio.”^[14]

This is not an administrative detail. In a feudal Christendom where monasteries could be captured by local families, papal exemption — the direct attachment of a monastery to Rome, which removes it from the authority of the local bishop — was a concrete instrument of ecclesial freedom. Sergius IV did not govern Rome with force, but he continued to extend Peter's protective jurisdiction.

The Holy See and modern notices

The official Holy See entry gives the minimal elements: 142nd pope, beginning of the pontificate on July 31, 1009, end on May 12, 1012, secular name Pietro, Roman birth.^[15] The Catholic Encyclopedia, signed by Horace K. Mann, adds the nickname Bucca Porci, the father Peter the Shoemaker, the ninth region of Rome called Pina — Ad Pinea according to the New Catholic Encyclopedia —, the office of bishop of Albano, monastic privileges, friendship toward the poor during a famine, and burial at the Lateran.^[16][17]

Britannica chiefly retains Sergius's dependence on Roman nobles and Crescentius II, while also noting two positive traits: help for the poor and privileges granted to several monasteries.^[18]

The acts preserved in PL 139

The most substantial source remains the series of letters and diplomas. They do not offer an interior portrait, but they give the real functioning of the pontificate. The formula often begins with the classical expression:

“Sergius, bishop, servant of the servants of God.” — Sergius IV, opening formula of several papal acts, PL 139^[19]

The expression servus servorum Dei is not ornamental. It affirms that the pope exercises an authority of service: confirming, protecting, correcting, preventing usurpations, and maintaining Churches in their rights.

The crusade letter: a separate dossier

The letter attributed to Sergius IV after the destruction of the Holy Sepulchre has long been used as a very early prefiguration of the crusade. Carl Erdmann judged it authentic and integrated it into his genealogy of Christian holy war. Aleksander Gieysztor, by contrast, rejected it as a later composition, probably forged in the ideological climate of the First Crusade.^[20] Hans Martin Schaller revisited the dossier in the early 1990s.^[21]

Prudence is necessary: the article must neither present Sergius IV as the true inventor of the crusade, nor erase the power of the shock caused in the West by the destruction of Christ's sanctuary. The certain fact is the destruction ordered by al-Hakim in 1009 — 1009-1010 according to some chronicles; the letter remains disputed.

A rough nickname, a modest Roman origin

The Latin sources give Pietro the nickname Bucca Porci, literally “pig's mouth” or “pig's snout.” Modern Italian forms vary between Bocca di Porco, Boccaporci and Buccaporci.^[22][23] The nickname should not be overinterpreted: early medieval Rome readily preserved very crude family sobriquets, which could come from a physical trait, a trade, a house, or a joke that became a name.

The Catholic Encyclopedia states that Pietro was the son of Peter the Shoemaker. The detail is precious because it places the future pope outside the very high Roman aristocracy. Sergius IV was not a Theophylact of Tusculum, nor a Crescentius by blood. He came from a more modest background, even if his accession to the bishopric of Albano presupposes solid insertion into the Roman clergy.^[24]

Bishop of Albano (1004-1009)

Around 1004, Pietro became bishop of Albano, one of the suburbicarian sees closest to Rome.^[25] This office was important: the suburbicarian bishops participated directly in the liturgical and political life of the Lateran; they surrounded the pope, consecrated, judged and served in major ceremonies.

The notice of the Liber Pontificalis in the Duchesne edition attributes to him a government of Albano of one lustrum, that is, five years.^[26] This corresponds to the period 1004-1009. Sergius IV therefore did not arrive at the Apostolic See as an unknown man: he had already governed a neighboring diocese and taken part in Roman affairs during the pontificate of John XVIII.

Succeeding John XVIII

John XVIII died or withdrew in 1009. The official list of the Holy See begins the pontificate of Sergius IV on July 31, 1009.^[27] The election took place in a climate of aristocratic control. The patrician John Crescentius II had dominated Rome since the fall of the antipope John XVI and the death of Crescentius Nomentanus at the end of the tenth century.

The pope's temporal power was then reduced. The pope blessed, confirmed, wrote and protected, but military and civil levers largely belonged to the urban nobility. This is what Britannica expresses when it says that Sergius had little temporal power and was subject to the Roman nobles.^[28]

The name Sergius

By taking the name Sergius, Pietro chose a name already borne by three popes. The closest, Sergius III, had left a controversial memory at the beginning of the tenth century; the choice therefore does not necessarily refer to him. It may point more broadly to the Roman tradition of the popes named Sergius, or simply provide a papal name distinct from Peter.

The most lasting novelty is not the name itself, but the fact that this change helped stabilize a practice. After Sergius IV, the distinction between birth name and papal name became increasingly normal.

A politically weak papacy

Modern notices insist on the political weakness of Sergius IV. The Catholic Encyclopedia writes that he contained (“checked”) the power of John Crescentius by strengthening the party favorable to the Germans.^[29] The sentence is brief but significant: rather than directly confronting the patrician, Sergius sought a counterweight in a Germanophile orientation, that is, in relation to the Ottonian and Salian empire.

This orientation prepared the next pontificate. Benedict VIII would rely on Henry II, crowned emperor in 1014, to release the papacy from part of its Roman dependence and to introduce officially the Filioque into the Creed sung at Rome.^[30]

Privileges: protecting the Church when Rome is weak

The documentary heart of the pontificate is the protection of ecclesiastical establishments. In 1010, Sergius confirmed to Bishop Andrew of Parentium the possession of the parish of Rovinj and of two castles disputed by the patriarch of Aquileia.^[31] In 1011, he confirmed the foundation of a parish church of Saint Michael dependent on Nonantola, regulating tithes and penitential judgment.^[32] In the same year, he confirmed the possessions of Cuxa and granted a privilege to Ripoll.^[33][34]

These acts are not spectacular, but they outline a program:

Apostolic protection as an instrument of peace

In several acts, Sergius IV uses a very Roman logic: what has been given to God, to Saint Peter, or to a monastery must not be taken back by private violence. The privilege is not merely a parchment; it is a juridical shield. Religious establishments can invoke it against a neighboring bishop, count, vassal or heir.

This function is especially important at the beginning of the eleventh century, when monastic reform and the Peace of God sought to limit seigneurial violence. Sergius IV was not a great reformer like Gregory VII, but his acts belong to the same slow construction: making spaces of ecclesial life less dependent on local rapacity.

The shock of 1009: destruction of the Holy Sepulchre

On September 28, 1009 according to the usual French dating — English-language syntheses most often retain October 18, 1009 —, the Fatimid caliph al-Hakim bi-Amr Allah ordered the destruction of the church of the Holy Sepulchre in Jerusalem. The Constantinian sanctuary, built on the place of Christ's death and Resurrection, was gravely ravaged. The event deeply struck both Eastern and Western Christendom.^[35]

For a Roman pope, the news touched the very heart of the faith. The Holy Sepulchre is not one monument among others: it is the place where the Church venerates the empty tomb, historical sign of the Resurrection. Even if Rome was politically weak, the attack on Jerusalem raised a new question: what could Latin Christendom do to defend the holy places?

The alleged encyclical of Sergius IV

A letter attributed to Sergius IV would call Christians to an expedition to deliver Jerusalem. If authentic, it would be a major milestone: almost a century before Clermont (1095), a pope would already have formulated a Western call to holy war for the Holy Sepulchre.

The problem is that the text is highly contested. Carl Erdmann defended it as authentic in his study on the birth of the crusading idea.^[36] Aleksander Gieysztor, in The Genesis of the Crusades: The Encyclical of Sergius IV (1009-1012), rejected it at length, seeing in it an invention from the time of the First Crusade. H. E. J. Cowdrey notes this dossier in the modern discussion of the origins of the crusade.^[37][38]

The prudent conclusion is therefore as follows:

What Catholic faith sees in the event

The destruction of 1009 does not yet prove the existence of a crusade in the strict juridical sense. The categories of crusade - official preaching, vow, indulgence, sign of the cross, canonical framework - would only be truly structured from Urban II and his successors onward.^[39] But it manifests something older: Latin Christendom could not remain inwardly indifferent to Jerusalem.

The empty tomb belongs to all the baptized. The pontificate of Sergius IV thus stands at the threshold of a movement larger than himself: a century of emotion, pilgrimages, eastern conflicts, ecclesial reform and military appeals would lead to Clermont.

Friend of the poor in time of famine

Mann's notice preserves a spiritual trait that the diplomatic acts do not show: Sergius IV was a great friend of the poor during a famine.^[40] The information is brief, but it deserves its place. In a Rome where civil power largely escaped him, the pope remained the one who fed, relieved and embodied the public charity of the Church.

“I was hungry and you gave me food.” — Jesus Christ, Matthew 25:35^[41]

This verse gives the Catholic key to the detail. For a pope whose sources preserve few great words, the memory of charity in time of shortage carries weight. The authority of Peter is measured not only by councils and privileges: it is also measured by the table opened to the hungry.

Death on May 12, 1012

Sergius IV died in Rome on May 12, 1012.^[42][43] The New Catholic Encyclopedia notes that he died six days before Crescentius, a circumstance that suggests foul play to most historians.^[44] The suspicion is plausible in a violent Rome, but it is not demonstrated.

He was buried in the Basilica of Saint John Lateran, the pope's cathedral — and not at Saint Peter's, as Duchesne establishes after John the Deacon^[45][46]. The original tomb disappeared in a fire (1308 or 1361): the remains were gathered into a polyandrum of the basilica, and a cenotaph placed by Borromini in the 17th century, in the right nave, marks the site; the medieval epitaph survives, set into a pillar.^[47] His death immediately opened a succession crisis: the Tusculans imposed Benedict VIII, while a rival, Gregory, is sometimes presented as an antipope. This crisis confirms that Sergius IV had not succeeded in pacifying the Roman scene; it also shows that his death marked the end of an aristocratic balance.

A pope without a major black legend

Sergius IV has neither the greatness of Nicholas I, nor the scandal of John XII, nor the political energy of Benedict VIII. His pontificate is a brief page. But it is not useless. It shows the papacy in one of its most ordinary forms: politically weak, but juridically tenacious; little visible militarily, but present in monasteries, tithes, parishes and the poor.

He is sometimes venerated as a saint in certain Benedictine traditions, but he has not been the object of universal canonization.^[48] Ignispedia must therefore avoid two excesses: rhetorically canonizing a secondary pope, or despising a modest pontificate. The truth is more sober: Sergius IV held Peter's office in a time of dependence, and he held it enough to leave acts of protection, a memory of charity, and a major historical question about Jerusalem.

What Sergius IV prepares

After him, Benedict VIII inaugurated a firmer phase: imperial alliance, more active reform, intervention in Italian affairs, coronation of Henry II, liturgical introduction of the Filioque at Rome in 1014. Sergius IV is therefore less a summit than a threshold. He belongs to the last breath of Crescentian Rome, just before the eleventh-century papacy began to rise again step by step toward the Gregorian reform.

• Pope John XVIII - immediate predecessor of Sergius IV, also under Crescentian influence.
• Pope Benedict VIII - Tusculan successor, more politically powerful, linked to Henry II.
• Pope John II - first pope to change his name at election.
• Pope John XIV - born Pietro Canepanova, direct precedent of a Peter who became pope under another name.
• Schism of 1054 - broader context of eastern and western tensions in the eleventh century.