Her father Thomas Plunket, 2nd Baron Plunket (1792–1866), was a junior Church of Ireland clergyman when she was born and later became the Bishop of Tuam, Killala and Achonry.
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As well as being the longest-lived Irish person, Plunket lived longer than anyone who died in Ireland or Britain, holding the title for 38 years, until 1970, when Ada Roe lived to be 12 days older.
Katherine (1820–1932) - the longest-lived Irish person ever
Katherine | Katherine Jenkins | Katherine, Northern Territory | Katherine Mansfield | Katherine Heigl | Katherine Harris | Katherine Anne Porter | Katherine Neville | Katherine Dunham | Katherine Bernhardt | Katherine Neville, Baroness Hastings | Katherine Neville (author) | Katherine More | Katherine Chon | William Plunket, 4th Baron Plunket | Katherine River | Katherine MacGregor | Katherine Brown | William Plunket, 1st Baron Plunket | Thomas Plunket, 2nd Baron Plunket | Thomas Plunket | Plunket Shield | Lady Katherine Ferrers | Katherine Smith | Katherine Ramsland | Katherine Newman | Katherine Neville, Duchess of Norfolk | Katherine Mary Clutterbuck | Katherine Kurtz | Katherine Jackson |