John II Crispo [SEP] mother
John II Crispo
John II Crispo (or "Giovanni"; 1388–1433) was the twelfth Duke of the Archipelago, etc., from 1418 to 1433, son of the tenth Duke Francesco I Crispo and wife Fiorenza I Sanudo, Lady of Milos and brother of Giacomo I and William II.
He married ca. 1420 "Nobil Donna" Francesca Morosini, Patrizia Veneta (–1455), and had three children: 
- Adriana Crispo (1423/1424 – 14??), married to Domenico Sommaripa (–
Giacomo II Crispo
Giacomo II Crispo (or Jacopo) (1426–1447) was the thirteenth Duke of the Archipelago, etc., from 1433 to 1447.
He was the son of twelfth Duke John II Crispo and "Nobil Donna" Francesca Morosini, Patrizia Veneta. He was a minor when he succeeded to the throne, and during his minority, the Duchy was ruled by his mother Francesca, described as a "masterful woman", who continued to influence in the affairs of state during the reign of her son