Sean McMahon was born, the son of Annie and Eugene. He had two brothers and three sisters. He was killed with both his children when his private airplane crashed in 1979 en route to see the visit of Pope John Paul II to Ireland.
The plane had taken off from Enniskillen St Angelo airport and was on its way to Shannon airport. They crashed in fog in the Cuilcagh mountains on the borders of Cavan, Leitrim and Fermanagh. His son Brian, daughter Carmel and sister-in-law Margaret Magee all died. The plane hit a mountain about 50 to 100 feet short of its peak. It burst into flames and it’s assumed those on board died instantly.
Sean was founder and chairman of the Enniskillen Flying Club. He was also a business figure with a large TV dealership.