When Hendrik Johannes Claus was born on 15 August 1827, in Rottevalle, Friesland, Netherlands, his father, Johannes Franciscus Claus, was 46 and his mother, Aukjen Halbes van der Heide, was 34. He married Aukjen Sierks Bijma on 22 October 1853, in Achtkarspelen, Friesland, Netherlands. They were the parents of at least 3 sons and 3 daughters. He died on 10 April 1888, in Harkema-Opeinde, Friesland, Netherlands, at the age of 60.
Some characteristic forenames: German Hans, Bodo, Heinz, Alfons, Eberhard, Erwin, Gerhard, Gunther, Helmut, Jochen, Kurt, Otto.
Flemish, Walloon, Dutch, and German: from a variant of the personal name Klaus , a shortened form of Nikolaus (see Nicholas ). This surname is also found in France (Alsace, Lorraine, and Nord). Compare Clouse .