Christian von Ehrenfels
Christian von Ehrenfels was born on 20 June 1859 in Rodaun near Vienna and grew up at his father's castle Brunn am Walde in Lower Austria. He joined secondary school in Krems and first studied at the Hochschule für Bodenkultur in Vienna and then changed to the Universität Wien.
Christian Sommerfeldt
He was born at Sukkestad in Toten as a son of district stipendiary magistrate and chancellor councillor David Christian Sommerfelt (1717–1773) and Benedicte "Bente" Christine Hoff. His grandfather Christian Sommerfelt was also district stipendiary magistrate. His great-grandfather and uncle were both named Hans, and became priests. The latter worked in Denmark and became ancestor for a Danish family line. Christian Sommerfeldt became ancestor of a Norwegian branch of Sommerfeldts, and so did his brother Ole Hannibal. Through his sister Maria he was an uncle of Lauritz Weidemann.