Priest. Joined the Congregation of Hermits of Brettino, which in 1256 merged with the Augustinian Hermits. Chosen the Augustinian Provincial Prior of the Marches of Ancona, Italy in 1269. Chosen the third Augustinian Prior General on Pentecost Sunday 1271, and served till 1274, visiting houses throughout Italy and France, and participating in the Second Council of Lyons in 1274. Unanimously chosen Augustinian Prior General in 1284, and served in that position the rest of his life. He worked tireless for years with Blessed Augustine of Tarano to revise the constitutions of the Order, implementing them in 1290; they stood for centuries before a new revision was needed. As a leader, he insisted on proper observance of the Augustinian Rule, and worked to found Augustinian houses for women. He encouraged his brother friars to become educated, improved the training of Augustinian novices, founded five Augustinian schools, and supported the creation of libraries. He had a deep devotion to the Blessed Virgin Mary, and passed some of that along to the tradition of the Augustinians. Miracle worker.
- 8 April 1291 in Orvieto, Tuscany, Italy of natural causes
- buried at the Augustinian house in Orvieto; by order of Pope Nicholas IV, the burial was delayed to allow all the flocks of mourners to pay their respects
- some relics later sent to Osimo, Italy
- some relics later sent to San Elpidio, Italy
- all relics gathered and re-interred in the Saint Augustine church in Rome, Italy in the early 18th century
- re-interred in the chapel in the Augustinian General Headquarters in Rome on 4 May 1970
- “Blessed Clement of Osimo“. CatholicSaints.Info. 7 April 2017. Web. 27 April 2017. <>