Gibbon Fitzgibbon1 
He lived at Clashmore, IrelandG.1
Children of Gibbon Fitzgibbon and Anastacia Ronayne
Maurice Fitzgibbon1
He was officerr in Revenue.1
John Fitzgibbon1
He was a merchant at Lisbon, PortugalG.1
Child of John Fitzgibbon and unknown wife (?)
unknown wife (?)1
Her married name became Fitzgibbon.
Child of unknown wife (?) and John Fitzgibbon
David Fitzgibbon1
For whom a memoria and genealogy of his family was drawn up by his cousin Gerald FitzGibbon.1
Katherine Fitzgibbon1
Her married name became FitzGerald.1
Philip Fitzgibbon1 
He served for many years in foreign military service.2 He lived at Castle Grace, IrelandG.2 His last will was dated 26 January 1734.2
Children of Philip Fitzgibbon and Aphra Sargent
- Robert Fitzgibbon2
- Maurice Fitzgibbon2 d. 19 Dec 1793
- John Fitzgibbon+2
- Gerald Fitzgibbon+2 d. 16 May 1794
- Ellen Fitzgibbon2
- Alice Fitzgibbon2
