"Cassidy (Station), not Cassidy's nor Cassidy Siding" adopted in the 18th Report of the Geographic Board of Canada, 31 March 1924, located at 49º 04' - 123º 52' as labelled on BC map 2A, 1913. Form of name changed to Cassidy (Post Office & Station) in the 1930 BC Gazetteer. Form of name changed to Cassidy (Post Office) in the 1953 Gazetteer. Form of name changed to Cassidy (Community) and application adjusted 15 December 1981 on 92 G/4.

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office

Cassidy Post Office was opened 1 June 1919.

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office

"Regarding Cassidy's, it is named after Thomas Cassidy, one of the early settlers in Oyster District and was so-called by reason of Cassidy's farm and home being nearby. The Island Railway [sic] does not pass through his farm or land. He settled on the section, now his wife's home, in the 1870's, and as long ago as 1884-6 the location of the Camps of the Railway constructors near Nanaimo River and not far from the present station, was called Cassidy's. He supplied the camps with milk and vegetables. Before then the homestead was called Cassidy's place or Tom Cassidy's. Cassidy died in October 1912. He was a very industrious, hard-working man -- spent many years in clearing his land of tall timber and taking out stumps. To see the farm now one would hardly believe it was at one time densely and heavily wooded." (c1918 notation on BC name card).

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office

According to plan 3T162 (undated), G. Cassidy obtained Lot 8, Pre-emption Certificate 593.

Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office