Willem Jan, Baron van Dedem tot de Rollecate was a Dutch lawyer, landowner and taxation officer who was responsible for the peat excavation in south-east Drenthe and north-east Overijssel. The canal and town of Dedemsvaart are named after van Dedem.
- Occupation
- businessperson
- Citizenship
- Kingdom of the Netherlands
- Born
- March 18, 1776
- Died
- November 21, 1851