William IX, Marquis of Montferrat

William IX
William IX
	Portrait by Macrino d'Alba
Marquis of Montferrat
Reign	1494–1518
Predecessor	Boniface III Palaiologos
Successor	Boniface IV Palaiologos
Born	10 August 1486
Died	4 October 1518; Trino
Noble family	Palaeologus-Montferrat
Spouse(s)	Anna d'Alençon
	Issue Maria Palaeologina; Margaret Palaeologina; Boniface IV of Montferrat
Father	Boniface III, Marquis of Montferrat
Mother	Maria of Serbia

William IX Palaeologus (10 August 1486 – 4 October 1518) was Marquis of Montferrat from 1494 until his death. He was a member of the House of Palaeologus-Montferrat, a cadet branch of the Palaiologos dynasty which had once ruled the Byzantine Empire.

Coat-of-arms on a coin (testone) of William IX.

Biography

He was the son of Marquis Boniface III and Maria of Serbia. At the time when he succeeded his father (1494), William was still a minor. At first, his mother acted as regent. After her death (1495), regency passed to his mother's cousin Constantine Komnen-Arianiti (1495-1499).[1]

He continued the pro-French policy of his father and, in 1508, he married to princess Anna d'Alençon, daughter of René d'Alençon. During the Italian Wars, in 1513, he protected the French retreat from Milan; however, to avoid retaliation from Maximilian Sforza William was forced to pay him 30,000 scudi.

The Milanese Duke did not respect the treaty, and his troops invaded Montferrat and sacked numerous cities. At the same time, informed that his relative Oddone, Marquis of Incisa, was trying to obtain the title of Marquis of Montferrat, William marched to Incisa and occupied that lordship. Oddone and his son Badone were sentenced to death. However, the annexation was later declared null by Holy Roman Empire diplomacy, but in the subsequent year, William was able to maintain the new lands.

He had 3 children with Anna d'Alençon:

Maria (1509–1530),
Margherita (1510–1566), married Federico II Gonzaga, Duke of Mantua
Boniface IV (1512–1530)

He died in 1518 and was succeeded by his son Boniface IV, initially with his mother Anne d'Alençon as regent.[2]

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gollark: Huh?

gollark: I'm sure some dodecahedron will eventually want to get rid of the term because it's "racist" with how things are going.

gollark: Because you can't see inside it, or something.

gollark: Technically that's a phrase.

References

Haberstumpf 2009, p. 191.
Haberstumpf 2009, p. 199.

Sources

Haberstumpf, Walter (2009). Regesti dei Marchesi di Monferrato (secoli IX-XVI). Alessandria: San Giorgio Editrice.CS1 maint: ref=harv (link)

William IX, Marquis of Montferrat Palaeologus-Montferrat Born: 10 August 1486 Died: 1518
Preceded by Boniface III	Marquis of Montferrat 1494–1518	Succeeded by Boniface IV

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[FOOTNOTEHaberstumpf2009191-1] Haberstumpf 2009, p. 191.

[FOOTNOTEHaberstumpf2009199-2] Haberstumpf 2009, p. 199.