Family Tree Maker shows you as my third cousin once removed. The nearest common ancestor is Johann George Nau who married Catherine Elizabeth Crouse. I have him as your Gr Gr Grandfather. And he would be my Gr Gr Gr Grandfather. The line on my side is Johann George Nau > George Edward Nau > Jacob Ralph Nowe > Cecil Howard Nowe > Ralph Usiel Nowe > Alan Charles Nowe.
On your side I am showing Johann George Nau > Solomon Nau > Irvin I. Nowe > Gerald Irvin Nowe > Brian Nowe.
Does this agree with your records? Some of my information comes from Betty Rhodenizer's book on the Nowe family tree, but you and your sister do not appear in it. Neither do my brothers or myself.
You can contact me directly at firstname.lastname@example.org
Sincerely, Alan Nowe