Katherine Alice Andersen, 1897, Arendal

Hello - This has proved harder than it seemed it should be. We have a great grandmather, Katherine Alice Andersen. From her marriage certificate she was born 11/10/1897. It could be October 11 or November 10 - the grooms birthday doesn't help resolve this issue. Again from the marriage certificate, she was from Anundal, N. I take that to be Arendel, Norway. I could be wrong. They were married October 12, 1918 in NYC when she was about 21 years old so she emigrated sometime prior to that. I have searched the Norway website to no avail. The changing of the last name has me very confused and I understand that the custom was changing in the 1890s. So, if someone can take pity on me and shed some light on the matter I would appreciate it. My goal is to identify her parents and siblings. Contact me directly if you wish ([email hidden]). Ed