David Davidson was enlisted ib British army in the 1820s, serving on the Mediterranean until being shipped to Canada. I have no marriage records, but a family bible refers to a daughter, Eliza, born in Nova Scotia at the time of his unit's short stay there before moving on to Quebec. I assume that Harriet was the daughter of a soldier and that she and david married at Corfu or en route to Nova Scotia (Harriet must have been pregnant already on the sea voyage).