Clubinfo.ie

Gaelic games had been played on the western shores of Lough Neagh for decades before the founding of the club. Seán O'Leary's GAC Newbridge was established in 1925 and covered the Newbridge and Ballymaguigan areas, both in Ardtrea North parish. The American Army built Toome airfield during World War II. This effectively split the parish in two, making it very difficult for the Ballymaguigan-based players to travel to the pitch and a separate club, St Trea's GFC, was set up in Ballymaguigan in 1944.

Newbridge first won the Derry Senior Football Championship in 1937 and added further Senior Championship successes in 1940, 1945 and 1948. Success carried into the 1950s and the club won the Championship again in 1950 and 1955. With the emergence of the extremely successful Bellaghy side of the late 1950s and early 1960s, it was 1966 before Newbridge added another Senior Championship, and won the competition again in 1967 and 1970.

O'Leary's won their most recent Senior Championship in 1989 and thereafter slipped down to Intermediate level. They won the Derry Intermediate Football Championship in 2002 and most recently in 2007. The club won Division 3 of the All-County League in 2008, and returned to competing at Senior level in 2009. Newbridge player Damian Barton was a member of Derry's 1993 All-Ireland winning team.