The House of Fenring
was a minor House of the Landsraad
in the Dune universe
House Fenring was not known to have a home planet but did rule on Arrakis for several decades, and then became the absentina-siridars of the planet Caladan.
House Fenring was ruled by Count Hasimir Fenring with Lady Margot Fenring, who were friends with the Imperial House Corrino.