So Milan was once again thrown open to the competition of usurpers.
[1] The most complete account of Filippo Maria Visconti written by a contemporary is that of Piero Candido Decembrio (Muratori, vol.
xx.).

The student must, however, read between the lines of this biography, for Decembrio, at the request of Leonello d' Este, suppressed the darker colors of the portrait of his master.

See the correspondence in Rosmini's Life of Guarino da Verona.
[2] This claim of the House of Orleans to Milan was one source of French interference in Italian affairs.

Judged by Italian custom, Sforza's claim through Bianca was as good as that of the Orleans princes through Valentina, since bastardy was no real bar in the peninsula.

It is said that Filippo Maria bequeathed his duchy to the Crown of Naples, by a will destroyed after his death.