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