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