Nikolaus von Holstein-Gottorp, Herzog von Oldenburg1
He gained the title of Herzog von Oldenburg.1 He was given the name of Nikolaus Anthony Gunther Max Johann Alfred Ernst von Holstein-Gottorp at birth.
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 210. Hereinafter cited as The Book of Kings.
Georg-Moritz von Holstein-Gottorp, Herzog von Oldenburg1
He gained the title of Herzog von Oldenburg.1 He was given the name of Georg-Moritz Friedrich Ferdinand Eglimar Huno von Holstein-Gottorp at birth.
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 210. Hereinafter cited as The Book of Kings.
Alexandrine Gustave Frederica Gräfin von Welsburg1 
She gained the title of Gräfin von Welsburg.1
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 211. Hereinafter cited as The Book of Kings.
Gustav Gregor Alexander Graf von Welsburg1 
He gained the title of Graf von Welsburg.1
Children of Gustav Gregor Alexander Graf von Welsburg and Luise Gräfin von Hahn
- Georg Elimar Albrecht Ludecke Leo Graf von Welsburg+1 b. 13 Apr 1906, d. 1945
- Alexander Anthony Gustav Adolf Graf von Welsburg1 b. 17 Apr 1908, d. 29 Apr 1945
- Alexandra Noel Therese Emily Gräfin von Welsburg+1 b. 25 Dec 1910
- Percy Friedrich Graf von Welsburg+2 b. 11 Feb 1913
Luise Gräfin von Hahn1 
She gained the title of Gräfin von Hahn.1 From 15 April 1905, her married name became von Welsburg.
Children of Luise Gräfin von Hahn and Gustav Gregor Alexander Graf von Welsburg
- Georg Elimar Albrecht Ludecke Leo Graf von Welsburg+1 b. 13 Apr 1906, d. 1945
- Alexander Anthony Gustav Adolf Graf von Welsburg1 b. 17 Apr 1908, d. 29 Apr 1945
- Alexandra Noel Therese Emily Gräfin von Welsburg+1 b. 25 Dec 1910
- Percy Friedrich Graf von Welsburg+2 b. 11 Feb 1913
Friedrich Franz Graf von Hahn1
Child of Friedrich Franz Graf von Hahn
- Luise Gräfin von Hahn+1 b. 1 Dec 1885, d. 17 Apr 1923
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 211. Hereinafter cited as The Book of Kings.
Georg Elimar Albrecht Ludecke Leo Graf von Welsburg1 
He gained the title of Graf von Welsburg.1
Children of Georg Elimar Albrecht Ludecke Leo Graf von Welsburg and Maria Ruth Schalscha von Ehrenfeld
- Alexander Thankmar Franziskus Antonius Graf von Welsburg2 b. 7 Feb 1938
- Christian Alosius Percy Graf von Welsburg2 b. 4 Mar 1939
Blanka von Tarnóczy von Alsó-Lelócz zu Jezernicze1
From 17 April 1930, her married name became von Welsburg.
Maria Ruth Schalscha von Ehrenfeld1
From 21 November 1936, her married name became von Welsburg.
Children of Maria Ruth Schalscha von Ehrenfeld and Georg Elimar Albrecht Ludecke Leo Graf von Welsburg
- Alexander Thankmar Franziskus Antonius Graf von Welsburg2 b. 7 Feb 1938
- Christian Alosius Percy Graf von Welsburg2 b. 4 Mar 1939
Alexander Anthony Gustav Adolf Graf von Welsburg1 
He gained the title of Graf von Welsburg.1
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 211. Hereinafter cited as The Book of Kings.