He was a pharmacist.
[The Küstner family genealogical table provides only his profession; his birthdate here is my estimate/bracket, based on the assumption that he was older than his wife.
Have you taken a DNA test for genealogy? If so, login to add it. If not, see our friends at Ancestry DNA.
Hans is 29 degrees from Elinor Glyn, 32 degrees from Frances Weidman and 22 degrees from Victoria of the United Kingdom of Great Britain and Ireland on our single family tree. Login to find your connection.