Petrine Iversen/Karl Axel Gustavsen?

Source information: Østfold county, Vestre Fredrikstad, Parish register (official) nr. 4 (1878-1907), Marriage records 1902, page 683. Permanent pagelink: http://www.arkivverket.no/URN:kb_read?idx_kildeid=365&idx_id=365&uid=ny&idx_side=-314 Permanent imagelink: http://www.arkivverket.no/URN:NBN:no-a1450-kb20060405010866.jpg line 29 marriage record for Petrine (?) Iversen in 1902. daughter of Severin Iversen - is his first name Fredrik? Trying to work forward and find some living relatives in Norway - any ideas on how to do this?