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Shipwright, ship owner and contractor
Born the son of Thomas Watt (1642–1734), was a well-known teacher of mathematics, surveying, and navigation
1728 Married Agnes Muirhead, who came from a distinguished family and was well-educated. Both were Presbyterians and strong Covenanters.
1736 January 19th. Birth of son James Watt at Greenock
James and Agnes were buried in the churchyard of Greenock's West Church