German noble
Rupert[1] (German: Ruprecht) was Vogt at Siegen and is one of the eldest known possible ancestors of the House of Nassau.
- ^ Rupert is only known by his Christian name, he probably never used a surname. He also probably never used a noble title equivalent to a surname either. The surname ‘of Laurenburg’ in the title of the article has only been added for technical reasons, and is derived from the surname of his son Dudo of Laurenburg.