Detail
Type Rg. - Unterhof is a Rittergut (Landed Estate).
Kr Fritzlar - The Kreis for Unterhof is Fritzlar. A Kreis is a government district (similar to a U.S. county).
See Gilsa - A See notation means the entry is dependent on another entry. In this case, Unterhof is dependent on Gilsa, which should be consulted for additional information.