If you have information about this name, share it in the comments area below!
Books about Grafhorst:
De grafhorst, het verhaal over een oud boerengeslacht by Halm Nvan (1979)
Wiki information Grafhorst:
Grafhorst is a small town about 3 km north of Kampen, in the Dutch province of Overijssel. It received city rights in 1333. Grafhorst was a separate municipality until 1937, when it became a part of IJsselmuiden; it is now a part of Kampen.
Grafhorst is a municipality in the district of Helmstedt, in Lower Saxony, Germany.