John FitzGibbon, 3rd White Knight1
He was also known as John Fitzmaurice.3
Child of John FitzGibbon, 3rd White Knight and Isabella Butler
David FitzGibbon, 2nd White Knight1
Child of David FitzGibbon, 2nd White Knight and unknown daughter de Wygornia
John FitzGibbon1 
He graduated with a Doctor of Medicine (M.D.)2
Joan FitzGibbon1
- [S78] Robert Douglas King-Harman, The Kings, Earls of Kingston (Cambridge, Cambridgeshire, U.K.: W. Hefer & Sons, 1959). Hereinafter cited as The Kings.
Honora FitzGibbon1
- [S78] Robert Douglas King-Harman, The Kings, Earls of Kingston (Cambridge, Cambridgeshire, U.K.: W. Hefer & Sons, 1959). Hereinafter cited as The Kings.
Anne FitzGibbon1
- [S78] Robert Douglas King-Harman, The Kings, Earls of Kingston (Cambridge, Cambridgeshire, U.K.: W. Hefer & Sons, 1959). Hereinafter cited as The Kings.
Mary Sulyard1 
Her married name became Cornwallis.1
Child of Mary Sulyard and Sir John Cornwallis
- Sir Thomas Cornwallis+1 d. 24 Dec 1604
William Fenton1 
- [S78] Robert Douglas King-Harman, The Kings, Earls of Kingston (Cambridge, Cambridgeshire, U.K.: W. Hefer & Sons, 1959). Hereinafter cited as The Kings.
Honora (?)1
Her married name became Fenton.1
- [S78] Robert Douglas King-Harman, The Kings, Earls of Kingston (Cambridge, Cambridgeshire, U.K.: W. Hefer & Sons, 1959). Hereinafter cited as The Kings.
Margaret Fenton1
Her married name became Courtenay.1
- [S78] Robert Douglas King-Harman, The Kings, Earls of Kingston (Cambridge, Cambridgeshire, U.K.: W. Hefer & Sons, 1959). Hereinafter cited as The Kings.
