Jack Charlton was the manager of the Irish international soccer team in 1990.
Jack Wilkinson - rugby league - was born in 1930.
Jack O'Connor - rugby union - died in 1980.
'Jack' is not a word in Irish. The male name 'Jack' would have 'Seáinín' as an equivalent in Irish.
Jack Irish was created in 2012.
Jack Ellis - rugby union - died on 2007-11-27.
Jack Ellis - rugby union - was born on 1912-10-23.
Jack Williams - rugby union - was born on 1882-11-18.
Jack Williams - rugby union - died on 1911-08-28.
Jack Bradbury - rugby league - was born on 1990-11-04.
Jack Jenkins - rugby player - died on 1971-12-01.
Jack Jenkins - rugby player - was born on 1880-04-19.