John Jamieson, born in Glasgow, Scotland ca 1780; travelled with his wife, Mary West, 40 years old and 5 children, Mary, John, Robert, George and Janet; settled in Lanark Twp., Canada west; sailed from Greenock, Scotland on board the Brock on July 13, 1820 and arrived in Quebec on August 20, 1820. What was John Jamieson's (senior) birth date?