Gabriel was born in Lévis, Québec, and is the oldest of four sons. He lived in different cities growing up, due to his father being a chaplain and deacon in the Canadian Armed Forces. He studied at the University of Ottawa where he earned three degrees, including a Bachelor of Education and a Master of Science—Biology. Gabriel was involved in various ministries at St. Maurice Parish and St. Monica Parish, in Nepean (Ottawa) before he joined the Companions of the Cross. He has a great devotion to the Blessed Virgin Mary and loves spending time in the presence of the Blessed Sacrament. Gabriel particularly enjoys playing music, learning new skills, spending time outside, and working with youth. He speaks English and French, and is learning Spanish.