He is remembered for his Liber Gestorum in Lombardia, a history of northern Italy – principally Milan under the Visconti family – from 1250 to about 1364.
[1] By 1347 he was at Borgomanero in the service of the Visconti family; he continued to serve them for most of his life.
There he wrote his Liber Gestorum in Lombardia, a history of northern Italy in general, and of Milan and the Visconti dynasty in particular, from 1250 to 1362; he later added material covering 1363 and 1364.
[1] The autograph manuscript has not been identified, but a manuscript copy in Biblioteca Ambrosiana of Milan is believed to be accurate; it also contains another short work, the De statu Canapicii liber.
[1][2] Neither the place nor the date of his death is known; it could not have been before 1366, as he makes reference to the marriage of an illegitimate daughter of Bernabò Visconti, Bernarda, to Giovanni di Baldino Suardi; that wedding took place on 16 January 1367, but was contracted in 1366.