The present comital family number the noble families Ahlefeldt, Frijs-Frijsenborg, Kaas, Trolle, Thott, Ulfstand, Ulfeldt, Huitfeldt, Sehested, Gyldenstierne, Rosenkrantz, Rantzau, Reventlow, Brahe, Ruud, Grubbe, Gabel, Krag to Juellund, and Krag-Juel-Vind-Frijs among their ancestress-linked relatives.
A member of the Danish noble Huitfeldt family and originally named Henrik Jørgen Huitfeldt, he adopted the name Kaas when he inherited Det Kaasenlundske Fideikommis in 1881, as he was descended from Birgitte Christine Kaas married Huitfeldt (1682–1761), a granddaughter of Jørgen Kaas.