Macmillan, Kirkpatrick (1813-1878) A
Scottish blacksmith who lived in Courthill, Dumfriesshire who is
believed by many to have built the first pedal-powered bicycle in 1839.
According to legend, a customer brought in a swiftwalker for repair and
Macmillan made a copy for himself, later, he added treadles, rods, and
cranks to supply power to the rear wheel.
can read more about him here