He was offered $70 a week to turn professional with the Toronto Blueshirts in 1912–13, but declined and played for the TCC senior team.
During the First World War, Romeril played senior hockey with the Winnipeg 61st Battalion, winning the Allan Cup in 1916.
Led by centre Harry Watson, the Granites won the Allan Cup in 1922 and 1923 (Romeril was injured and couldn't play in the 1923 series).
In February 1927, Romeril was named head coach of the Toronto Maple Leafs of the National Hockey League after the Toronto St. Patricks were acquired by a group headed by Conn Smythe and renamed the Maple Leafs.
He was also a strong golfer, competing in Toronto-area tournaments and serving as captain at the Rosedale Golf Club.