Fam History Library - SLC Extensive search has been made in Hallands County for the birthdate of this man, but with no conclusions yet. His illegitimate son Carl Johan Bengtzen was sealed to his stepfather, Hans Nielson. Fam History Library - SLC Extensive search has been made in Hallands County for the birthdate of this man, but with no conclusions yet. His illegitimate son Carl Johan Bengtzen was sealed to his stepfather, Hans Nielson.