Friedrich Wilhelm Conrad Haase was born on 2 April 1819, in Haustenbeck, Detmold, Lippe as the son of Friedrich Wilhelm Conrad Haase and Anne Marie Elisabeth Koetter. He married Anna Marie Charlotte Frees on 15 February 1852, in Haustenbeck, Detmold, Lippe. They were the parents of at least 3 sons and 1 daughter.
Some characteristic forenames: German Kurt, Gerhard, Otto, Klaus, Dieter, Guenter, Heinz, Manfred, Arno, Benno, Bernd, Claus.
German, Dutch, and Jewish (Ashkenazic): variant of Haas and Hase ‘hare’.
Germanized form (translation into German) of Sorbian Zajac ‘hare’.