Vicedomino de Vicedominis
[3] On 20 February 1251, he was Treasurer of the Church of Béziers and Chaplain of Pope Innocent IV, who granted him the privilege of holding pontifical dignities, even though he had been married and had children.
[5] On 22 July 1257, the election of Vicedomino de Vicedominis to the Archbishopric of Aix was confirmed in Consistory by Pope Alexander IV.
[8] From the beginning of his tenure of the See, he was assisted by his relative, Grimier (Grimerius, Grimoard) de Vicedominis, whom he first appointed as an official of his curia, then Archdeacon and Canon supernumerary of the Cathedral,[9] then Vicar-General.
But Gregory, residing at Lyons, did not want to confirm him, believing that he would do more usefully as Bishop of Sisteron—an odd judgment considering that Alain was working at Aix, not Sisteron.
When the Council ended, and Pope Gregory began his return journey to Rome, Vicedomino was (unaccountably) not one of the travelling party.
The Oath of Fidelity of the Emperor Rudolf mentions seven cardinals as present in Lausanne on 20 October 1275:[14] Petrus Ostiensis, Ancherus Pantaleone of S. Prassede, Guglelmus de Bray of S. Marco, Ottobono Fieschi of S. Adriano, Giacomo Savelli of S. Maria in Cosmedin, Gottifridus de Alatri of S. Giorgio in Velabro, and Mattheus Rosso Orsini of S. Maria in Porticu—but not Vicedomino de Vicedominis, Cardinal Bishop of Palestrina.
Nonetheless, Vicedomino and eleven other cardinals were present for the opening of the Conclave on 20 January 1276, the first to be held under the regulations promulgated by Gregory X at the Council of Lyons in 1274.
On 21 January, the Dominican friar, Cardinal Peter of Tarantaise in Savoy, was elected on the first scrutiny and chose the name Innocent V.[16] He was consecrated in Rome in the Vatican Basilica in February 1276.
In those thirty-nine days, however, even before he left the Lateran for Viterbo, he did one important thing: he suspended Gregory X's Constitution that regulated the conclave.
He intended, according to all cardinals who were present, not including Vicedomino de Vicedominis, to make adjustments and improvements to the Gregorian document.
A subsequent investigation, led by Cardinal the Bishop of Sabina, Bertrand de Saint Martin, charged prelates and other members of the papal Curia with instigating the riots, probably because they did not want to see a repetition of the Conclave of 1268-1271.
[20] His death was noted in his home town of Piacenza, in the Necrology of the Cathedral, and on the correct day, 6 September, but it records him only as a cardinal, and makes no mention of his Papacy.
