Detail
Type Gut - Bockhorst is a Gut (Estate).
Kr Zeven - The Kreis for Bockhorst is Zeven. A Kreis is a government district (similar to a U.S. county).
See Elsdorf - A See notation means the entry is dependent on another entry. In this case, Bockhorst is dependent on Elsdorf, which should be consulted for additional information.