Bellamy was born at Canada West, which would later be the province of Ontario. The son of an English immigrant, he entered the woodworking industry after finishing school. After returning to farming briefly, he moved to Manitoba where established an agricultural product dealing business and later worked for the Massey Harris agricultural supply company. His employment with that company would bring him to Edmonton where he continued to work for them until he left to start his own business, the Bellamy Company, which manufactured agricultural products, establishing himself as a prominent Edmonton businessperson.