Hansen Family

Am looking for information on Kristen (Christen) Hansen, born 11 Feb 1836 bapt 17 Feb, Notteroy, parents Hans Christen Hansen & Karen Helene Hansdatter. Possible marriage to Elizabeth (Nilsdatter) Aastrom 22nd Feb 1868 Notteroy. Have found a daughter Anna Emeline born 5 Dec 1872 to Elisa Nilsdatter Aastrom & Kristen Hansen in Sandar. Would like if possible Elizabeth's birth and parents, how would I know if I have the right Kristen and any other children to this couple. Any help appreciated. Alan.