John Callaghan
John Callaghan may refer to:*John Callaghan (physician) (1923–2004), Canadian cardiac surgeon *John Callaghan (Galway), Irish murder victim *John Callaghan (musician) (born 1969), British musician *John Callaghan (screenwriter), see List of Republic of Doyle episodes *John Callaghan (footballer), see List of Sheffield Wednesday F.C. players Provided by Wikipedia