James Williamson Galloway Macdonald (Jock Macdonald): Pioneer of Canadian Abstract Art James Williamson Galloway Macdonald, better known as Jock Macdonald, was a Scottish-Canadian painter and educator whose groundbreaking explorations into abstraction profoundly shaped the artistic landscape of Canada. Born in Thurso, Scotland, on May 31, 1897, Macdonald’s journey began amidst the rugged beauty of his homeland before embarking on a tr…