麥當奴
Born May 23, 1812, at No.1 Fitzwilliam Square, Dublin, second son of the Rev. Thomas Meredith and his wife Elizabeth Maria Graves (1792–1855), the eldest daughter of the Very Rev. Richard Graves, Dean of Ardagh. He was named for his father's first cousin, William Collis (1788–1866) J.P., of Tieraclea House, High Sheriff of Kerry, a first cousin of Lord Monteagle. Meredith was a nephew of Robert James Graves and a brother of Edmund Allen Meredith. His first cousins included John Walsingham Cooke Meredith, Sir Richard Graves MacDonnell, John Dawson Mayne, Francis Brinkley, Major-General Arthur Robert MacDonnell and Sir James Creed Meredith.