Walter Kingsland1 
Dr. Fernand Gaston Labori1
Child of Dr. Fernand Gaston Labori and Marguerite Okey
- Odette Labori1 b. 22 Nov 1902, d. 19 Jun 1968
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.
Marguerite Okey1
Child of Marguerite Okey and Dr. Fernand Gaston Labori
- Odette Labori1 b. 22 Nov 1902, d. 19 Jun 1968
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.
Dino Ceretti1
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.
Gaetan de Bourbon, Principe di Borbone delle Due Sicilie1
He gained the title of Principe Gaetan di Borbone delle Due Sicilie.1 He was given the name of Gaetan di Borbone at birth.1 He was naturalized as a British subject on 2 February 1939.1 He abdicated as Prince of Bourbon-Sicily on 2 February 1939.1 On 2 February 1939 his name was legally changed to Gaetan de Bourbon.1
Children of Gaetan de Bourbon, Principe di Borbone delle Due Sicilie and Olivia Yarrow
- Adrian Philip de Bourbon+1 b. 7 Apr 1948
- Gregory Peter de Bourbon+1 b. 2 Jan 1950
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.
Olivia Yarrow1
Her married name became de Bourbon.
Children of Olivia Yarrow and Gaetan de Bourbon, Principe di Borbone delle Due Sicilie
- Adrian Philip de Bourbon+1 b. 7 Apr 1948
- Gregory Peter de Bourbon+1 b. 2 Jan 1950
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.
Lt.-Cdr. Charles A. Yarrow1
Child of Lt.-Cdr. Charles A. Yarrow and Gladys W. Foulkes
- Olivia Yarrow+1 b. 16 Jul 1917
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.
Gladys W. Foulkes1
Child of Gladys W. Foulkes and Lt.-Cdr. Charles A. Yarrow
- Olivia Yarrow+1 b. 16 Jul 1917
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.
Adrian Philip de Bourbon1
Children of Adrian Philip de Bourbon and Linda Idensohn
- Philippe de Bourbon b. 5 May 1977
- Michelle de Bourbon+ b. 12 Feb 1979
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.
Gregory Peter de Bourbon1
Children of Gregory Peter de Bourbon and Maureen Powell
- Christian Peter de Bourbon b. 11 Apr 1974
- Raymond de Bourbon b. 8 Nov 1978
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 443. Hereinafter cited as The Book of Kings.