Doyle was born in
Currow,
County Kerry, and began playing rugby union at
Newbridge College, County Kildare. He went on to study veterinary science at
University College Dublin, who he also represented at
rugby. He made his Ireland debut against
France on 23 January 1965, scoring a try in the game. While representing Ireland he also studied at
Cambridge University where he gained a
Blue in the 1965
Varsity match against the
Oxford University RFC. Doyle also studied at the
University of Edinburgh and played club rugby for
Edinburgh Wanderers before returning to Ireland. He went on to earn the distinction of never being dropped during his 20-
cap international career as a
flanker. Doyler, as he was affectionately known, scored the winning try against
Wales in
1967, toured Australia with Ireland in
1967 and
South Africa with the
British and Irish Lions the next year. His last game for Ireland was against
Australia in October 1968, when he lined out alongside his brother
Tommy. ==Coaching==