William Cowin & Ann Looney married in Maughold on 19 Nov 1814.

See the IGI for their many children.

This looks like the family in the Maughold 1841 census:
1 11 47 Port-e-Vullen Village William COWIN 50 Mariner Isle of Man
1 11 47 Port-e-Vullen Village Ann COWIN 40 Isle of Man
1 11 47 Port-e-Vullen Village John COWIN 20 Tailor Isle of Man
1 11 47 Port-e-Vullen Village Margret COWIN 18 Isle of Man
1 11 47 Port-e-Vullen Village Edward COWIN 8 Isle of Man
1 11 47 Port-e-Vullen Village Thomas COWIN 6 Isle of Man
1 11 47 Port-e-Vullen Village William COWIN 4 Isle of Man

Sue