15 Feb 1872 - Geburt of seine natural Mutter Auguste at Coburg 

7 Jan 1875 - Geburt of sein natural Vater August at Gotha, Gotha, Thuringia, Germany 

22 Jan 1900 - Geburt at Coburg 

25 Apr 1945 - Tod of seine natural Mutter Auguste at Coburg 

4 Aug 1954 - Tod of sein natural Vater August at Coburg