The surname Watt originated in England or Scotland. The earliest recording of the surname in Scotland was in 1586. It has been found written as Watt and Wat. The Watt side of my family set sail from Glasglow, Scotland in April of 1879. David Watt was born 25 September 1858 in Methil, Fife, Scotland and died 21 March 1945, Marquette, Marquette, Michigan, United States.