From A Compendium of Irish Biography, 1878
Donat, Saint, an Irishman, who left his home in youth, travelled through France and Italy, for some time lived a hermit in Tuscany, and was appointed Bishop of Fiesole in 816; "which see," says Alban Butler, "he governed with admirable sanctity and wisdom." Colgan gives an extract from his life of St. Bridget in Latin verse. His festival is the 22nd of October.
300b. Saints, Lives of the: Alban Butler. 2 vols. Dublin, 1833.
339. Ware, Sir James, Works: Walter Harris. 2 vols. Dublin, 1764.