Luke was the sixth child of William and Elizabeth McRoberts. He was born on October 17, 1884 near Parry Sound, Ontario.

He enlisted and fought in France during World War 1 until he was wounded with a gun shot wound in the left shoulder. He took up lumbering back in Parry Sound.

Luke died on June 11, 1938 in Parry Sound, Ontario from a cerebral hemorrhage. He was 53 years old. Luke was the fourth person in his family to die with in 14 months, starting with his father, then his sister, and his mother.