unknown Heron1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
James FitzLyons1
Child of James FitzLyons
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
Richard St. Lawrence1 
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
unknown FitzSimon1
She lived at Dublin, County Dublin, IrelandG.1 Her married name became St. Lawrence.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
Anne St. Lawrence1
Her married name became Dillon.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
Bartholomew Dillon1
He lived at Keppoch, Ireland.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
Alison St. Lawrence1
Her married name became Golding.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
John Golding1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
Lady Catherine FitzGerald1 
Her married name became Preston.3 After her marriage, Lady Catherine FitzGerald was styled as Viscountess Gormanston on 21 September 1532. From before March 1550, her married name became St. Lawrence.2
Children of Lady Catherine FitzGerald and Jenico Preston, 3rd Viscount Gormanston
- Hon. Genet Preston+4
- Hon. Elizabeth Preston+3
- Hon. Catherine Preston+5 d. a 10 Dec 1598
- Nicholas Preston4
- Christopher Preston, 4th Viscount Gormanston+4 b. c 1537, d. 24 Jan 1599/0
- [S37] BP2003 volume 2, page 2298. See link for full details for this source. Hereinafter cited as. [S37]
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume IV, page 174. Hereinafter cited as The Complete Peerage.
- [S37] BP2003. [S37]
- [S6] Cokayne, and others, The Complete Peerage, volume XII/1, page 13.
Elizabeth Plunket1 
Her married name became St. Lawrence.1
Child of Elizabeth Plunket and Christopher St. Lawrence, 7th Baron Howth
- Nicholas St. Lawrence, 8th Baron Howth+2 b. c 1555
- [S37] BP2003 volume 2, page 2410. See link for full details for this source. Hereinafter cited as. [S37]
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 151. Hereinafter cited as The New Extinct Peerage.
- [S37] BP2003. [S37]
