Born Arthur Charles Fontaine II named after his great-grandfather on his father's side. His father left the family when he was 14 and upon entering high school he went by Arthur Lynch-Fontaine. On his 18th birthday, "Artie," as his family and friends called him, legally changed his name from Arthur Charles Fontaine II to Arthur Charles Lynch. He made the decision to honor his mother and grandfather, Carlin Lynch, who stepped in as a father-figure to Arthur and remained in that role until his death in 2019.
