GREGORIO di BERGAMO. - Theologian and bishop, born at Bergamo in the second half of the 11th century, died there a martyr on 9 June 1146. A Vallombrosan monk and friend of St Bernard, he became bishop of his native city in 1133.
He composed, between 1130 and 1140, the Tractatus de veritate Corporis et Sanguinis Christi, transcribed, on Mabillon’s behalf, by I. A. Casari in 1686 (the manuscript is lost; the copy is preserved in Paris, Bibl. naz. lat. 17, 187), first published by P. A. Uccelli (Scritti inediti del b. Gregorio Barbarigo, Parma 1877, pp. 673-745) and reprinted by H. Hurter (SS. Patrum opuscula selecta, XXXIX, Innsbruck 1879, pp. 1-123).
This Eucharistic work was deservedly appreciated by Mabillon because, although it did not attain the circulation of that Algero di Liegi (v.), it possesses its merits: clarity of expression and doctrinal soundness.