De Es was born in 1942 in Gresten, Lower-Austria, as Dieter Schwertberger, the second son of two teachers.
Stefan Eins grew up in Vienna and Gresten, Austria.
Gresten |
She married, 2 November 1893, at Genoa, Italy, Otto Ludwig Philipp von Seefried auf Buttenheim, (* 26. September 1870 in Bamberg; † 5. September 1951 at Stiebar Palace in Gresten), Freiherr zu Hagenbach.