[3][4] He had an elder brother, Lodovico, who was born in 1462, and was a Consistorial Advocate in Rome under Pope Julius II; he died in 1506.
[6] Andreasi was a Protonotary Apostolic, and was the ambassador (orator) of the Duke of Milan to the Emperor Charles V, and then to Pope Clement VII, at least from 1529 to 1532.
[1][3] In 1545 and again in 1548, assisted by his Vicars, Bishop Andreasi made official Visitations of the religious institutions in his diocese.
Due to his advancing age, Bishop Andreasi was granted a Coadjutor on 14 December 1545, his own nephew Giovanni Battista Grossi.
[10] He died on 22 January 1549 at the age of nearly eighty-two,[1][11] and after a public viewing for two days, his remains were taken to Mantua for burial.