A roepnaam is a call name.
Roepnamen were often derivatives of the official name. For example, these were the call names of my grandparents:
- Hendrik Hoitink, known as Henk
- Gesiena Wilhelmina Woordes, known as Mien, a diminutive of Wilhelmina.
- Johannes Marijnissen, known as Jan.
- Catharina Flooren, known as Toos. Catharina was shortened to Cato, which became Toos (pronounced “toes”) in some southern parts of the Netherlands.