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 Hansen (architect)
Christian Hansen was born in Copenhagen. He attended the Royal Danish Academy of Fine Arts in Copenhagen from 1816, just 13 years old, where he studied under Christian Frederik Hansen, the leading Danish architect of the time, and Gustav Friedrich Hetsch. Christian Frederik Hansen taught him a rational approach to architecture and Hetsch introduced him to Schinkel whose influence he had brought to Denmark.