(Redirected from William V, Count of Hainaut)
'William I', Duke of
Bavaria-
Straubing (
Frankfurt am Main,
May 12 1330 –
April 15 1389,
Le Quesnoy), was the second son of the emperor
Louis IV the Bavarian from his second wife
Margaret of Holland and Hainaut. He was also known as 'William V', Count of
Holland, as 'William III', Count of
Hainaut and as 'William IV', Count of
Zeeland.
In 1345 William's father was conferring Hainaut, Holland, Zeeland and Friesland upon his wife Margaret, and shortly later also upon their son William. After his father's death in
1347 William ruled
Bavaria, Holland and Hainaut together with his five brothers until
1349. With the first division of the
Wittelsbach possessions in 1349 he received Hainaut, Holland and
Lower Bavaria together with his brothers
Stephen II and
Albert I. After the next division of Bavaria in
1353 he ruled together with his younger brother Albert I in
Bavaria-Straubing, Holland and Hainaut.
William had engaged in a long struggle with his mother Margaret, obtaining
Holland and
Zeeland from her in
1354, and
Hainaut on her death in
1356.
In
1350, the nobles of Holland asked Margaret to return to Holland again. She then
battled for the power in Holland and Hainaut for some years with her son William who refussed to pay her alimony. The Cod league was formed in
May 23,
1350 by a number of supporters of William. On
September 5 of the same year, the Hook league was formed. Soon afterward, these factions clashed, and a civil war began.
Edward III of England, Margaret's brother in law through her sister
Philippa of Hainault, came to her aid, winning a naval engagement off
Veere in
1351; a few weeks later the Hooks and their English allies were defeated by William and the Cods at
Vlaardingen, an overthrow which ruined Margaret's cause. Edward III shortly afterwards changed sides, and the empress saw herself compelled (1354) to come to an understanding with her son, he being recognized as count of Holland and Zeeland, she of Hainaut. Margaret died two years later, leaving William, in possession of the entire Holland-Hainaut inheritance (July 1356). William was married to Matilda ("Maud" in the English style) of Lancaster, sister to
Blanche of Lancaster.
In
1357, he began to show signs of insanity, and his brother Albert assumed the regency in Holland and Hainaut in
1358. William was confined for the remainder of his life.
Family and children

Coats of Arms of the Counts of Hainaut and Holland of Wittelsbach family.
He married in
1352 in
London Matilda of Lancaster, daughter of
Henry of Grosmont, 1st Duke of Lancaster and
Isabel de Beaumont. They had only one daughter, who died in
1356. He also had illegitimate children:
# Wilhelm, married
1398 Lisbeth Hughe.
# Elisabeth, married Brustijn van Herwijnen, lord of
Stavenisse.
He was succeeded by his brother
Albert in
1388.
See also
★
Counts of Hainaut family tree
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