 They had three children - Margaret Rae Olsen, Anna Kristine Olsen, and Karin Synneve Olsen Billings.Arnold and Margaret have 5 grandchildren; John-David Childs, Todd Arnold Graetz, Kara Ann (Graetz) Trapp; Jonathan Olsen Billings and Luke Alexander Billings.They had two great-grandchildren, Victoria Graetz and Sawyer Olsen Trapp.