|William the Good|
|Count of Hainaut, Holland, and Zeeland|
|Died||7 June 1337|
|Noble family||House of Avesnes|
|Spouse(s)||Joan of Valois|
|Father||John II, Count of Hainaut|
|Mother||Philippa of Luxembourg|
William the Good (Dutch : Willem, French : Guillaume; c. 1286 – 7 June 1337) was count of Hainaut (as William I), Avesnes, Holland (as William III), and Zeeland (as William II) from 1304 to his death.
William, born c. 1286, was the son of John II, Count of Hainaut, and Philippa, daughter of Henry V, Count of Luxembourg. He was the brother of John of Beaumont and Alice of Hainault.
William was originally not expected to become count. After the deaths of his elder brothers, John (killed at Kortrijk in 1302) and Henry (d. 1303), he became heir apparent to his father's counties.
Prior to becoming count, he was defeated by Guy of Namur at the battle on the island of Duiveland in 1304. Guy and Duke John II of Brabant then conquered most of Zeeland and Holland, but these territories were recovered again when William became the new count in the same year.William continued the war with Flanders until the Peace of Paris in 1323, during which the Count of Flanders renounced all claims on Zeeland. William, in turn, gained all of Zeeland but agreed to renounce all claims on Imperial Flanders. William had occupied most of the Bishopric of Utrecht and tried to conquer Friesland but was repelled by Hessel Martena. At the death of his uncle, Guy d'Avesnes, Bishop of Utrecht, William took his fief of Amsterdam and annexed it to Holland.
Many of his daughters married with important rulers of Europe; King Edward III of England and Holy Roman Emperor Louis IV were married to his daughters, while he was married to the sister of the King Philip VI of France.With these important alliances William gained considerable influence and respect which he used to advance the interests of his counties.
On 19 May 1305 William married Joan of Valois,sister of the future king Philip VI of France, and had the following children:
|Ancestors of William I, Count of Hainaut|
Baldwin VI, also known as Baldwin the Good, was Count of Hainaut from 1051 to 1070 and Count of Flanders from 1067 to 1070.
Henry I, called the Great, was Count of Nevers and Duke of Burgundy from 965 to his death. He is sometimes known as Odo-Henry or Otto-Henry, since his birth name was "Odo" and he only adopted "Henry" on being elected duke of Burgundy.
John II was Count of Hainaut, Holland, and Zeeland.
William II was Count of Hainaut from 1337 until his death. He was also Count of Holland and Count of Zeeland. He succeeded his father, William I, and married Joanna of Brabant in 1334, but had no issue.
William I, Count of Nevers, was the son of Renauld I, Count of Nevers and Hedwig of France, Countess d'Auxerre. In 1040 he succeeded his father as Count of Nevers and d'Auxerre and in 1065 he was also the Count of Tonnerre. He married Ermengarde, daughter of Renauld, Count of Tonnerre about 1039. William died at Nevers 20 June 1100.
Lambert II, Count of Lens was a French nobleman. He was likely born circa 1030. This would put his death age at about 24 years old.
Constance of Arles, also known as Constance of Provence, was queen of France as the third spouse of King Robert II of France.
Baldwin III, called the Young, was Count of Flanders, who briefly ruled the County of Flanders together with his father, Arnulf I, from 958 until his early death.
Ermengarde of Anjou, was a Duchess consort of Burgundy. She was the daughter of Count Fulk III of Anjou and Hildegarde of Sundgau. She was sometimes known as Ermengarde-Blanche.
Odo II was the count of Blois, Chartres, Châteaudun, Beauvais and Tours from 1004 and count of Troyes and Meaux from 1022. He twice tried to make himself a king: first in Italy after 1024 and then in Burgundy after 1032.
Theobald I (913–975), called the Trickster, was the first count of Blois, Chartres, and Châteaudun as well as count of Tours.
Adele of Vermandois was both a Carolingian as well as a Robertian Frankish noblewoman who was the Countess of Flanders (934–960).
Adela of France, known also as Adela the Holy or Adela of Messines;, was, by marriage, the Duchess of Normandy, Countess of Flanders (1035–1067).
William III was the Count and Margrave of Provence from 1014 to his death. He inherited the titles of his father Rotbold II but preceded his cousin William IV as Count of Provence.
Adelaide-Blanche of Anjou was the countess consort by marriage of Gévaudan and Forez, of Toulouse, of Provence, and of Burgundy; and queen consort of Aquitaine. She was the regent of Gevaudan during the minority of her sons in the 960s, and the regent of Provence during the minority of her stepson from 994 until 999.
Rozala of Italy was, by her successive marriages, countess of Flanders and queen of the Franks. She was regent of Flanders in 987-988 during the minority of her son.
Judith of Brittany, also called Judith of Rennes (982–1017), was Duchess of Normandy from c. 1000 until her death.
Baldwin II of Boulogne was a son of Arnulf III, Count of Boulogne, whom he succeeded as count of Boulogne.
Ermengarde-Gerberga of Anjou, also called Ermengarde of Anjou, was the Countess of Rennes, Regent of Brittany (992–994) and also Countess of Angoulême.
Gerberge of Lorraine was the daughter of Giselbert, Duke of Lorraine, and Gerberga of Saxony, daughter of Henry I the Fowler, King of Germany. She was a descendant of Charlemagne through both her parents. Gerberge died sometime after 7 September 978.
William I, Count of HainautBorn:c. 1286 Died: 7 June 1337
| Count of Hainaut,|
Holland and Zeeland