Janice, it is such a pleasure to meet you!
I believe we have the same ancestor in Peter Jørgen Martinus Johnsen Ystenæs (born about 1813 in Borgund, near Ålesund).
I have undertaken a lot of research in the Norwegian digital archives (
http://www.arkivverket.no/eng/Digital-Archives), and if I have things correct, Peter was Andrew's father. Peter is also my great great grandfather (great grandfather is Ole Johan Andreas Petersen Ystenæs, and grandfather is Rasmus Engvald Ludvig Petersen Ystenes, who immigrated to Alberta).
You can check out my full tree at Rootsweb (
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?db=jmness).
I would love to exchange more information with you, and hopefully meet up some day. Let's correspond directly.