12th-century Italian Roman Catholic priests

head of the Catholic Church from 1216 to 1227

Canon regular and revolutionary

Italian noble and saint

Italian Carthusian monk

Italian linguist and translator

Italian bishop and saint

Roman Catholic prelate and diplomat

Tuscan monk writer and poet

Guarin (French: Guérin, Italian: Guarino, Norman: Warin) (died 21 January 1137) was the chaplain (magister capellanus) and chancellor of Roger II of Sicily from about 1130 to his death, during the first decade of the Norman kingdom of Sicily. According to Alexander of Telese, the contemporary chronicler, he was "erudite ... and most prudent in negotiations ... a cleric well-versed in letters, skillful in matters of the world, and possessed of a tenacious and cautious mind."

Sicilian archdeacon and religious scholar (died 1162)