When Hans Christian van Holtz was born on 23 June 1891, in Batavia, Dutch East Indies, his father, Carl Georg von Holtz, was 37 and his mother, Leonie Eulalie Bénard, was 36. He married Ijoet about 1920. They were the parents of at least 1 son and 1 daughter. He died on 12 October 1973, in Noordwijk, South Holland, Netherlands, at the age of 82.