When Johan Zackeus Karlsson was born on 14 January 1880, in Skepperstad, Jönköping, Sweden, his father, Carl Johan Ferdinand Johannesson, was 26 and his mother, Ida Kristina Johansdotter, was 23. He married Anny Adina Kristina Karlsdotter on 31 December 1910, in Fröderyd, Jönköping, Sweden. He lived in Hjärtlanda, Jönköping, Sweden in 1896 and Norrö, Jönköping, Sweden in 1897.
Some characteristic forenames: Scandinavian Lars, Anders, Alf, Bjorn, Erik, Kerstin, Agust, Elnar, Fritjof, Gudmundur, Johan, Kristinn.
Swedish: patronymic from the personal name Karl (see also Charles ). Compare Carlsson .