One of the Castle Downs subdivisions, Caernarvon is named for a castle in Wales. A community league and elementary schools, as well as attractive parkland, lie at the heart of the area, which is served by a network of pleasant pedestrian pathways. The vast majority of area residents are under 50 years of age and over half the households have children at home.KENNEDY Real Estate, YOUR source for Edmonton Real Estate and Caernarvon Homes For Sale.