Patrick "Pat" O'Callaghan (28 January 1906 – 1 December 1991) was an Irish athlete and Olympic gold medallist. He was the first athlete from Ireland to win an Olympic medal under the Irish flag rather than the British flag. In sport he then became regarded as one of Ireland's greatest-ever athletes. Early and private life Pat O'Callaghan was born in the townland of Knockaneroe, near Kanturk, County Cork, on 28 January 1906, the second of three sons born to Paddy O'Callaghan, a farmer, and Jane Healy. He began his education at the age of two at Derrygalun national school. O'Callaghan progressed to secondary school in Kanturk and at the age of fifteen he won a scholarship to the Patrician Academy in Mallow. During his year in the Patrician Academy he cycled the round trip from Derrygalun every day and he never missed a class. O'Callaghan subsequently studied medicine at the Royal College of Surgeons in Dublin. Following his graduation in 1926 he joined the Royal Air Force Medical Service. He returned to Ireland in 1928 and set up his own medical practice in Clonmel, County Tipperary where he worked until his retirement in 1984. O'Callaghan was also a renowned field sports practitioner, greyhound trainer and storyteller. Sporting career Early sporting life O’Callaghan was born into a family that had a huge interest in a variety of different sports. His uncle, Tim Vaughan, was a national sprint champion and played Gaelic football with Cork in 1893. O’Callaghan's eldest brother, Seán, also enjoyed football as well as winning a national 440 yards hurdles title, while his other brother, Con, was also regarded as a gifted runner, jumper and thrower. O’Callaghan's early sporting passions included hunting, poaching and Gaelic football. He was regarded as an excellent midfielder on the Banteer football team, while he also lined out with the Banteer hurling team. At university in Dublin, O’Callaghan broadened his sporting experiences by joining the local senior rugby club. This was at a time when the Gaelic Athletic Association ‘ban’ forbade players of Gaelic games from playing "foreign sports". It was also in Dublin that O’Callaghan first developed an interest in hammer-throwing. In 1926, he returned to his native Duhallow where he set up a training regime in hammer-throwing. Here he fashioned his own hammer by boring a one-inch hole through a 16 lb shot and filling it with the ball-bearing core of a