Rosedale acquired its name from Mary Jarvis, wife of provincial secretary Sheriff William Jarvis. The couple settled into the Jarvis estate in south Rosedale in the 1820’s. Mary named the estate Rosedale after the abundance of wild roses that grew on the property and some say that it was Mary’s frequent walks and horseback rides through the area that paved the way for the winding roads that have become a trademark of the residential Rosedale neighbourhoods.

Mary Jarvis died on June 9, 1852 and William Jarvis died at Rosedale on July 26,1864. Rosedale House survived until 1905.