Background
Mullen was born in Courtown Harbour, Company Wexford and educated at Belvedere College, Dublin and The Royal College of Surgeons in Ireland.
Mullen was born in Courtown Harbour, Company Wexford and educated at Belvedere College, Dublin and The Royal College of Surgeons in Ireland.
He played youth rugby with New Ross Reconstruction Finance Corporation. He played as hooker, winning 25 caps for Ireland during the 1940s and 1950s. He captained the Irish team to their first Grand Slam in the 1948 Five Nations Championship and was one of eight players from that team who lived to see the country"s next Grand Slam in 2009. He played four tests for the Lions on that tour.
Two against New Zealand and two against Australia.
He missed the third and fourth tests against New Zealand through injury.