Detail
Type Gut - Röttgen is a Gut (Estate).
Kr Lennep - The Kreis for Röttgen is Lennep. A Kreis is a government district (similar to a U.S. county).
See Dhünn 1) - A See notation means the entry is dependent on another entry. In this case, Röttgen is dependent on Dhünn 1), which should be consulted for additional information.