He was born on March 17, 1890, in Winnipeg, Manitoba.
He worked as a commercial illustrator between 1922 and 1924. He first worked as a teacher, then promoted to principal at the Winnipeg School of Art, until 1947.
FitzGerald exhibited in two shows with the Group of Seven in 1930, and joined the Group in 1932 when J.E.H. MacDonald died.
LeMoine FitzGerald passed away of a heart attack on August 7, 1956, in Winnipeg, Manitoba, at the age of 66.