Charles Alphonsus Sherrard (1924-1993) was an Irish-Australian tenor singer better known by the stage name Patrick O'Hagan.
Born in Derry, Northern Ireland, he immigrated to Australia where he found success singing traditional Irish and Celtic songs.
He moved back to Ireland, settling in Drogheda in County Louth, where he ran a pub before he decided to return to Australia.
In the late 1950s and early 1960s, he starred in the Australian television series Patrick O'Hagan Sings.
His son Seán Patrick Michael Sherrard better known as Johnny Logan is a famous Australian-born Irish singer and composer and winner of the Eurovision Song Contest twice with "What's Another Year" in 1980 and "Hold Me Now" in 1987.