William II, Lord of Egmond

He was the son of Gerard, Lord of Egmond and an unknown mother, possibly Beatrix, daughter of Wouter of Haarlem, or Mabilia.

Because he was still underaged, he was supervised by a regent, his second cousin Walter / Wouter "Stoutkind" ("naughty child") van Egmont until 1248.

In 1258, he transferred the ambachtsheerlijkheden of Spanbroek, Oudedorp, Oudkarspel and Wadeweij to Count Floris V of Holland.

He purchased some territory to the North of Egmond, near Huisduinen and Bergen and started to develop this area in the following years.

Willem participated in a campaign against Friesland in 1282 and was rewarded with tithes from the heerlijkheid of Hemert.