- Born on June 21, 1905
- Deceased on June 14, 1988, at the age of 82 years
Parents
- Anton von Widmann-Sedlnitzky (1865 - 1949), Graf von Widmann-Sedlnitzky
- Gabriella Dentice (1870 - )
Family
- Married on February 26, 1951 in Vienna, with Isabella von Ezdorf (1921 - 1998), Gräfin von Ezdorf, issuing
Private