Willem married Cornelia Barts van Elst, daughter of Bart Rijks van Elst and Brandina van Ee, on 19 May 1748 in Werkhoven.95 (Cornelia Barts van Elst was born in Driebergen 95 and was christened on 20 August 1719 in Driebergen 95.)

Spouses/Children:
Cornelia Barts van Elst
• Brandje Willems van Dijk+
• Evertje Willems van Dijk
• Maria Willems van Dijk
• Evertje Willems van Dijk
• Arie Willems van Dijk