Hello. I think I can help you in the forward direction of this family if it is, indeed, the Tivis family that I am related to (by marriage). From George Ethan Tivis (and Lillian) forward. His daughter, Dorothy, recently died (July 13, 2011). She was my step mother. GE Tivis' other child was Bernadine, whose death preceded Dorothy's in 2007.
Dorothy was a well-known Vogue model. Very interesting life. Let me know if any of this is interesting to those interested in Tivis of Nebraska, North and South Dakota.
barbara horwitz esmark