Complex sentence: He was married to Edith Kirk Christiansen, with whom he had 3 children, Gunhild Kirk Johansen, Kjeld Kirk Kristiansen and Hanne Christiansen.
Split into simpler sentences: He was married to Edith Kirk Christiansen. Godtfred and Edith had 3 children, Gunhild Kirk Johansen, Kjeld Kirk Kristiansen and Hanne Christiansen.