Education
He studied Roman law under Baldus de Ubaldis at Perugia, and then canon law under Bartholomeus de Saliceto at Bologna.
He studied Roman law under Baldus de Ubaldis at Perugia, and then canon law under Bartholomeus de Saliceto at Bologna.
He worked in the tradition of Giovanni d"Andrea. He earned the Latin nickname anchora juris, and was also known as Pietro de Farneto. His academic career was mainly at Bologna.
He was an influential jurisconsult and teacher in Florence from the 1390s.
He spent time also at Siena and Venice. In 1402 he moved to the University of Ferrara, with Antonius de Butrio (who was one of his students) and Johannes de Imola.
An elaborator of conciliarism, he participated in the Council of Pisa and Council of Constance on behalf of Antipope John XXIII.
The marriage of Thomas of Lancaster, 1st Duke of Clarence and Margaret Holland in 1412 required a papal dispensation, because of the degree of consanguinity as defined in canon law and the Book of Leviticus. The dispensation was granted by John XXIII, against quite recent precedent (the 1392 case of Bernard VII, Count of Armagnac who wished to marry the widow of his late brother John III, Count of Armagnac, and was refused by Pope Clement VII). And proceeded on the basis of an opinion of Peter of Ancarano (influenced by Andrea).
lieutenant created a precedent itself, on papal powers.