sentences:  Raised in Sydney, Australia, Gleeson attended Catholic Jesuit school St Aloysius' College representing the schools 1st XV rugby union team over 2 years and as captain in the latter and playing for the CAS 1st XV and the New South Wales 2nd XV.He went on to represent Australia at u/19 and u/21 (Captain).Gleeson has enjoyed a distinct career, representing Northern Suburbs in the Sydney competition, the NSW Waratahs in the Super 12, Leinster in Ireland and finally most notably Ireland.