[Ger-Poland-Volhynia] Name search

[Van]

I am searching for information about Susanna SCHLVZE b: 23 Oct 1835 in
Zhitomir, D: 28 in Feb 1925 in NoDak.
Susanna married Martin HENKE, son of Jan HENKE and Katarzyny Luck in Posen
Territory. It is believed she had a brother immigrate to America too. A note
mentioned she moved from Missouri to No.Dak. My greatest problem is the
surname does not appear anywhere. The closest found to date is Schluz, but
that too, reached a dead end. Any suggestions would be appreciated. Thanks,
L. Van de Bruggen,
Tracyton, Washington