The House of Castell is a German noble family of mediatised counts of the old Holy Roman Empire.[1] In 1901, the heads of the two family branches, Castell-Castell and Castell-Rüdenhausen, were each granted the hereditary title of Prince by Luitpold, Prince Regent of Bavaria.[1]
- ^ a b Almanach de Gotha. 1910. Perthes, p. 107, 109, 120–1. Deuxième Partie.