Christian Christophorus Augustinus Maria von Seilern und Aspang was born 22 June 1949 in Litschau, Gmünd District, Lower Austria, Austria to Franz Joseph von Seilern und Aspang (1914-2005) and Aglaë von Waldstein (1923-1996) . He married Sophie-Bernadette von Nostitz-Rieneck (1967-) 3 September 1994 in Schloss Eisernz, Eisenerz, Leoben District, Styria, Austria.
Children
| Name | Birth | Death | Joined with |
| Aglae von Seilern und Aspang (1995-) | 22 September 1995 Oberndorf bei Salzburg, Salzburg-Umgebung District, Salzburg, Austria | ||
| Ferdinand von Seilern und Aspang (1997-) | 4 September 1997 Oberndorf bei Salzburg, Salzburg-Umgebung District, Salzburg, Austria | ||
| Jakob von Seilern und Aspang (2000-) | 2000 Oberndorf bei Salzburg, Salzburg-Umgebung District, Salzburg, Austria | ||
Siblings
| Name | Birth | Death | Joined with |
| Christian von Seilern und Aspang (1949-) | 22 June 1949 Litschau, Gmünd District, Lower Austria, Austria | Sophie-Bernadette von Nostitz-Rieneck (1967-) | |
| Thomas von Seilern und Aspang (1955-) | 6 June 1955 Litschau, Gmünd District, Lower Austria, Austria | Sophie von Gudenus (1954-) | |