Donough O'Brien1
M, #386981
Last Edited=21 Sep 2009
Child of Donough O'Brien
- Joan O'Brien+2 b. 1625, d. 1681
Joan O'Brien1 
F, #386982, b. 1625, d. 1681
Last Edited=6 Feb 2026
Joan O'Brien was born in 1625.2 She was the daughter of Donough O'Brien.3 She married Major Gerald Fitzgerald, 17th Knight of Glin, son of John FitzGerald, 16th Knight of Glin and Honora O'Connor.1 She died in 1681.2
Her married name became Fitzgerald.
Her married name became Fitzgerald.
Children of Joan O'Brien and Major Gerald Fitzgerald, 17th Knight of Glin
- Thomas Fitzgerald, 18th Knight of Glin+3 d. 1730/31
- John Fitzgerald3
- Honora Fitzgerald3
- Helen Fitzgerald3
- Jane Fitzgerald+3 d. 1750
- Mary Fitzgerald+3 b. 1681
Sir Nicholas de Castle Martin1
M, #386983
Last Edited=20 Sep 2009
Child of Sir Nicholas de Castle Martin
Citations
- [S37] BP2003 volume 3, page 4116. See link for full details for this source. Hereinafter cited as. [S37]
John Fitzgerald1 
M, #386984
Last Edited=21 Sep 2009
John Fitzgerald was the son of Major Gerald Fitzgerald, 17th Knight of Glin and Joan O'Brien.2 He died, without issue.1
He was a notable duellist.1
He was a notable duellist.1
Mary Fitzgerald1 
F, #386985, b. 1681
Last Edited=6 Feb 2026
Mary Fitzgerald was born in 1681.2 She was the daughter of Major Gerald Fitzgerald, 17th Knight of Glin and Joan O'Brien.3 She married Cornelius O'Mahony.1
Her married name became Mahony.
Her married name became Mahony.
Child of Mary Fitzgerald and Cornelius O'Mahony
- Ellen O'Mahony2 b. 1714, d. 1802
Cornelius O'Mahony1 
M, #386986, d. 1722
Last Edited=6 Feb 2026
Cornelius O'Mahony married, secondly, Mary Fitzgerald, daughter of Major Gerald Fitzgerald, 17th Knight of Glin and Joan O'Brien.1 He died in 1722.1
He lived at New Castle, County Limerick, IrelandG.1 He lived at Kilmorna, Knockavrony, County Kerry, IrelandG.1
He lived at New Castle, County Limerick, IrelandG.1 He lived at Kilmorna, Knockavrony, County Kerry, IrelandG.1
Child of Cornelius O'Mahony and Mary Fitzgerald
- Ellen O'Mahony2 b. 1714, d. 1802
Honora Fitzgerald1
F, #386987
Last Edited=21 Sep 2009
Honora Fitzgerald is the daughter of Major Gerald Fitzgerald, 17th Knight of Glin and Joan O'Brien.2 She married Henry FitzGerald.1
Henry FitzGerald1
M, #386988
Last Edited=21 Sep 2009
Henry FitzGerald married Honora Fitzgerald, daughter of Major Gerald Fitzgerald, 17th Knight of Glin and Joan O'Brien.1
He had one son and one daughter.1 He lived at Braemore, County Kerry, IrelandG.1 He lived at Licklevun Castle, County Kerry, IrelandG.1
He had one son and one daughter.1 He lived at Braemore, County Kerry, IrelandG.1 He lived at Licklevun Castle, County Kerry, IrelandG.1
Citations
- [S47] BIFR1976 page 418. See link for full details for this source. Hereinafter cited as. [S47]
Helen Fitzgerald1
F, #386989
Last Edited=1 Aug 2009
Helen Fitzgerald is the daughter of Major Gerald Fitzgerald, 17th Knight of Glin and Joan O'Brien.2 She married John Ankettle.1
Her married name became Ankettle.
Her married name became Ankettle.
John Ankettle1
M, #386990
Last Edited=21 Sep 2009
John Ankettle married Helen Fitzgerald, daughter of Major Gerald Fitzgerald, 17th Knight of Glin and Joan O'Brien.1
He lived at County Limerick, IrelandG.1
He lived at County Limerick, IrelandG.1
Citations
- [S47] BIFR1976 page 418. See link for full details for this source. Hereinafter cited as. [S47]




