|William I of Holland|
|Count of Holland|
William I as imagined in the 16th century
|Reign||1203 - 4 February 1222|
|Died||February 4, 1222|
|Mother||Ada of Huntingdon|
William was born in The Hague, but raised in Scotland. He started a revolt against his brother, Dirk VII and became count in Friesland after a reconciliation. Friesland was considered as a part of Holland by the Counts of Holland. His niece, Ada, Countess of Holland inherited Holland in 1203, but William couldn't accept this. After a war of succession, known as the Loon War (1203-1206), William won the county. Ada and her husband, Louis II, were supported by the bishop of Liège and bishop of Utrecht, and the count of Flanders. William was supported by the duke of Brabant and by the majority of the Hollanders.
Emperor Otto IV acknowledged him as count of Holland in 1203, because he was a supporter of the Welfs. He and many others changed allegiance to emperor Frederick II after the battle of Bouvines in 1214. He took part in a French expedition against king John of England. The pope excommunicated him for this.
Possibly because of this, William then became a fervent crusader and by this his excommunication was lifted. He campaigned in Prussia and joined in the conquest of Alcácer do Sal. In Europe, he came to be called William the Crazy for his chivalric and reckless behaviour in battle. William conquered the city of Damietta during the Fifth Crusade.
There were great changes in the landscape of Holland in the end of the 12th and during the 13th century. Many colonists bought land to turn the swamps into polders. Most of the swamps had been sold, and irrigation had started during the reign of William. Huge infrastructural works were done; the island called Grote Waard was enclosed with dikes all around and a dam was built at Spaarndam. New governmental bodies were created, the so-called water boards, which were charged with the task of protecting the polders against ever-present threat of flooding. Count William granted city rights to Geertruidenberg in 1213, to Dordrecht in 1217, to Middelburg in 1220 and perhaps also to Leiden. In this way he gave an impulse to trade.
Adelaide died on 12 February 1218 while William was away on crusade. In 1220 Count William remarried with Marie of Brabant, second wife of Emperor Otto IV, daughter of Henry I, Duke of Brabant and Maud of Boulogne and Alsace, while soon after his death in 1222 his son Floris married Mathilde of Brabant, her ten year younger sister.
|Dirk V, Count of Holland|
|Floris II, Count of Holland|
|Dirk VI, Count of Holland|
|Theodoric II, Duke of Lorraine|
|Gertrude (Petronella) of Lorraine|
|Hedwig of Formbach|
|Floris III, Count of Holland|
|Hermann of Salm, King of Germany|
|Otto I, Count of Salm, Rheineck and Bentheim|
|Sophia of Formbach|
|Sophia of Rheineck|
|Henry, Margrave of Frisia|
|Gertrud of Northeim|
|Gertrude of Brunswick|
|William I, Count of Holland|
|Malcolm III, King of Scotland|
|David I, King of Scotland|
|Margaret of England|
|Henry of Scotland, Earl of Huntingdon|
|Waltheof II, Earl of Northumbria|
|Maud of Northumbria, Countess of Huntingdon|
|Judith of Lens|
|Ada of Huntingdon|
|William de Warenne, 1st Earl of Surrey|
|William de Warenne, 2nd Earl of Surrey|
|Ada de Warenne|
|Hugh of France, Count of Vermandois|
|Elizabeth of Vermandois|
|Adela of Vermandois|