Question: When did William Ii Crispo's father die?

Knowledge 1: William II Crispo
William II Crispo ("Guglielmo" in Italian; 1390–1463) was the fifteenth Duke of the Archipelago, from 1453 to 1463.He was the son of the tenth Duke Francesco I Crispo and wifeFiorenza I Sanudo, Lady of Milos. [SEP] Knowledge 2: Francesco I Crispo
Francesco I Crispo, Patrizio Veneto (died 1397) was the tenth Duke of the Archipelago through his marriage and the will of Venice.Francesco Crispo was probably born in Verona.He was Lord of Milos, thus a vassal to the Duke of Naxos, as well as his cousin through his marriage to Fiorenza Sanudo, a grand-daughter of the Duke Guglielmo Sanudo.Crispo might also have been a pirate.He was sent by the Republic of Venice to Naxos in March 1383 for concern that the then Duke Niccolò III dalle Carceri was incompetent.The Republic suffered from predation by the Ottoman Empire in the Aegean.On the island, a hunt was suggested.Officially, on the way back Niccolo III, escorted by Crispo's men was attacked by rebels or thieves.He fell off his horse and died.To quench any revolt, Francesco Crispo had to assume power.The Republic of Venice quickly sent its congratulations.Andros was another problem.It belonged to Maria Sanudo, sister of the late duke.When Francesco gave as a dowry Andros and Syros to his own daughter Pétronilla, Maria Sanudo called for justice in Venice.With his wife he had eight children:
Knowledge 1: Francesco I Crispo
Francesco I Crispo, Patrizio Veneto (died 1397) was the tenth Duke of the Archipelago through his marriage and the will of Venice.Francesco Crispo was probably born in Verona.He was Lord of Milos, thus a vassal to the Duke of Naxos, as well as his cousin through his marriage to Fiorenza Sanudo, a grand-daughter of the Duke Guglielmo Sanudo.Crispo might also have been a pirate.He was sent by the Republic of Venice to Naxos in March 1383 for concern that the then Duke Niccolò III dalle Carceri was incompetent.The Republic suffered from predation by the Ottoman Empire in the Aegean.On the island, a hunt was suggested.Officially, on the way back Niccolo III, escorted by Crispo's men was attacked by rebels or thieves.He fell off his horse and died.To quench any revolt, Francesco Crispo had to assume power.The Republic of Venice quickly sent its congratulations.Andros was another problem.It belonged to Maria Sanudo, sister of the late duke.When Francesco gave as a dowry Andros and Syros to his own daughter Pétronilla, Maria Sanudo called for justice in Venice.With his wife he had eight children: [SEP] Knowledge 2: Francesca Morosini
Francesca Morosini( fl. 1454), was a Duchess consort of Naxos by marriage to John II Crispo.She served as regent of Naxos during the minority of her son Giacomo II Crispo from 1433.She was described as a" masterful woman", who continued to influence in the affairs of state during the reign of her son and grandson until the accession of William II to the throne in 1453.In 1447, she claimed the post of regent for her grandson, but Niccolo of Syra and Santorin and William of Anaphe had her imprisoned and resumed regency with the support of Venice.When Niccolo died, Francesca Morosini, the archbishop and the Naxians elected his son Francesco in his place in the regency and successfully asked Venice to ratify it.After the succession of William II in 1453, the dowager duchess Francesca retired to Venice after having founded the church and monastery of St Antonio dedicated to the Knights of St John in 1452.
Knowledge 1: Francesco I Crispo
Francesco I Crispo, Patrizio Veneto (died 1397) was the tenth Duke of the Archipelago through his marriage and the will of Venice.Francesco Crispo was probably born in Verona.He was Lord of Milos, thus a vassal to the Duke of Naxos, as well as his cousin through his marriage to Fiorenza Sanudo, a grand-daughter of the Duke Guglielmo Sanudo.Crispo might also have been a pirate.He was sent by the Republic of Venice to Naxos in March 1383 for concern that the then Duke Niccolò III dalle Carceri was incompetent.The Republic suffered from predation by the Ottoman Empire in the Aegean.On the island, a hunt was suggested.Officially, on the way back Niccolo III, escorted by Crispo's men was attacked by rebels or thieves.He fell off his horse and died.To quench any revolt, Francesco Crispo had to assume power.The Republic of Venice quickly sent its congratulations.Andros was another problem.It belonged to Maria Sanudo, sister of the late duke.When Francesco gave as a dowry Andros and Syros to his own daughter Pétronilla, Maria Sanudo called for justice in Venice.With his wife he had eight children: [SEP] Knowledge 2: 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 and grandson until the accession of William II to the throne in 1453.The reign of Giacomo II was reportedly a peaceful and prosperous one, as the Ottomans were occupied in Hungary, and Venice included the Duchy in their protection in their peace treaty with the Ottomans in 1446.He married in 1444 Ginevra Gattilusio, daughter of Dorino I of Lesbos, and wife Orietta Doria, and had two children:

Answer: 1397