Detail
Type Hrgr. - Trensahl is a Häusergruppe (Group of Houses).
Kr Plön - The Kreis for Trensahl is Plön. A Kreis is a government district (similar to a U.S. county).
See Dobersdorf - A See notation means the entry is dependent on another entry. In this case, Trensahl is dependent on Dobersdorf, which should be consulted for additional information.