He came from a noted legal family: his grandfather, Gerald Fitzgibbon was a Queen's Counsel and Master in Chancery and his father, also Gerald Fitzgibbon, was a Lord Justice of the pre-independence Irish Court of Appeal: along with Christopher Palles and Hugh Holmes, the elder Fitzgibbon was credited with making the Court of Appeal a tribunal whose judgements are still quoted with respect today.
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Mr. Justice Fitzgibbon through his mother was grandson of John FitzGerald, Baron FitzGerald, the first Irish judge to be made a Lord of Appeal in Ordinary.
Gerald Ford | Gerald Durrell | Gerald Casale | Gerald Gardner | Gerald Scarfe | Gerald Freedman | Gerald R. Ford | Gerald Gardner (Wiccan) | Gerald McRaney | Gerald | Gerald Wilson | Gerald Ronson | Gerald Forsythe | Gerald Brom | Gerald Aungier | Fitzgibbon | Gérald Tremblay | Gerald Templer | Gerald L. Baliles | Gerald Jennings | Gerald Grosvenor, 6th Duke of Westminster | Gerald Edelman | Gerald D. Hines | Sarah Fitz-Gerald | Richard B. Fitzgibbon, Jr. | John FitzGibbon, 1st Earl of Clare | Gerald Stern | Gerald R. Ford, Jr. | Gerald R. Ford-class aircraft carrier | Gerald Rafshoon |
Born to Garrett (Gerald) FitzGibbon and Mary Widenham in Glin, County Limerick, Ireland, he enlisted in the Knight of Glin's Yeomanry Corps at age 15.