Crescentia Countess von Seilern und Aspang was born 13 May 1799 in Brno, Brno-City District, South Moravian Region, Czech Republic to Karl von Seilern und Aspang (1756-1806) and Maximiliana von Wurmbrand-Stuppach (1770-1830) and died 30 July 1875 Kiscenk, Győr-Moson-Sopron County, Western Transdanubia Region, Hungary of unspecified causes. She married István Széchenyi de Sárvár-Felsővidék (1791-1860) 4 February 1836 in Buda, Hungary.
Children
| Name | Birth | Death | Joined with |
| Karolina Jozefa Zichy de Zich et Vásonkeõ (1820-1906) | |||
| Alfréd Pál Zichy de Zich et Vásonkeõ (1821-1856) | |||
| Maximiliana Zichy de Zich et Vásonkeõ (1822-1881) | |||
| Géza Zichy de Zich et Vásonkeõ (1828-1911) | |||
| Imre Henrik Zichy de Zich et Vásonkeõ (1831-1892) | |||
| Rudolf Emil Zichy de Zich et Vásonkeõ (1833-1893) | |||
| Ilona Crescencia Zichy de Zich et Vásonkeõ (1834-1883) | |||
| Name | Birth | Death | Joined with |
| Béla István Széchenyi de Sárvár-Felsővidék (1837-1908) | |||
| Ödön Széchenyi de Sárvár-Felsővidék (1839-1922) | |||
| Júlia Széchenyi de Sárvár-Felsővidék (1844-1844) | |||
Residences
Footnotes (including sources)