BOHIER (Boherius), PIERRE. - Benedictine abbot, later Bishop of Orvieto, was born at La Rettore (diocese of Carcassonne). In 1335 he was at the Benedictine abbey of St-Chinian, of which he became abbot in 1350.
A profound scholar of canon law, he played a prominent part in the General Chapter of the provinces of Narbonne and Auch in implementing the constitution *Summi Magistri* of Benedict XII. Of this work he later published a commentary in Paris (1519): *Benedictina, seu Benedicti XII pontificis maximi constitutio cum comment. P. B.*, in 8°.
The friendship and esteem of Urban V drew him from the cloister. Appointed by that Pope Bishop of Orvieto, he was also his vicar in Rome in 1364 and administrator of vacant cardinalatial sees. While with the Pope at Avignon, he retained the see of Orvieto and was also appointed Bishop of Vaison. In 1370 he was at Subiaco, where he remained in 1377 as visitor by order of Gregory XI.
From 1378, after the election of Urban VI, his life became unsettled. He adhered to Clement VII and was therefore deposed and excommunicated by Urban. Later B. appears anxious to find a solution to the great juridical and dogmatic controversy regarding papal election and the ending of the schism. It is probable that for this reason Charles V of France summoned B., his chaplain and ambassador to the court of Avignon, to the Celestine monastery in Paris, where he composed glosses on the *Liber Pontificalis* relating to this question.
In 1379 at Rouen he began a larger work addressing the most pressing issue of those years and after: the necessity or otherwise of summoning a general council to end the schism. Perhaps prompted by the results of his conscientious studies undertaken in the treatise *Quidam tractatus compositus per dominum episcopum urbevetanum, monachum tempore huius schismatis in Rothomago existentem, videlicet a. D. 1379*, B. abandoned the cause of the antipope and submitted to the legitimate Urban VI, who immediately reinstated him in his dignities, while Clement VII on his part declared him deposed.
Of his life after reconciliation with Rome we know only that on 2 July 1387 he obtained from the Pope a plenary indulgence for contributors to the longed-for construction of the monastery dedicated to St Jerome at Subiaco. The year of his death is unknown; he certainly died before Urban VI.
Besides those already mentioned, several other works remain by him. While still abbot of St-Chinian he composed: a Commentary on the Rule of St Benedict; *Speculum monachorum* or *De professione monachorum*; *De signo locutionum*; a Commentary on the bull of Benedict XII *Bonus Pastor*. In 1373 he completed a new Commentary on the Rule of St Benedict, written at the request of the monks of Subiaco.