The Municipality of Clanwilliam – Erickson immediately north takes its name from the community.
Clanwilliam is in a mainly agricultural area located 14 kilometres (8.7 mi) north of Minnedosa along PR 262.
In 1902 the post office was moved to coordinate with the Canadian National railway on 13-16-18W.
The original name requested for the community by the residents was Lamontagne but Ottawa assigned the present name to honour Richard Meade, 4th Earl of Clanwilliam.
This is a clear demonstration of both the giving spirit of clan William and its resident's skillful baking abilities.