Ravnstrup is a manor house and estate situated north of Næstved, on the southern part of Zealand, Denmark.
He became a major landowner after also acquiring the estates of Borreby and Fraugdegaard through his marriage to Dorthe Friis in 1618.
He also expanded the Ravnstrup estate by buying up more land in the area and purchased Herlufmagle Church where he constructed a chapel.
Christian Daa, Claus Daa'seldest surviving son by his second wife, who was the queen's avener, inherited Tavnstrup, Borreby and Fraugdegaard in 1641.
He was ruined during the Swedish Wars and had to pledge his estate which was taken over by Erik Krag, Oluf Rosenkrantz and Mathias Worm in 1668 and sonn thereafter sold to Anders Jespersen Engberg.
His son Christian von der Maase increased the number of tenant farms before selling the estate to Jacob Hjort in 1719.
It was difficult times for Danish agriculture and Wessel had to sell Ravnstrup in 1740 to pay off his debts.
His widow, Johanne Henriette Valentine Kaas, ran the estate after her husband's death.
Grüner's eldest son kept Kærup after his father's death whereas Tavnstrup was sold to Victor Hahn.
Ravnstrup Manor appeared as the residence of A-38 in the 1989 DR television Christmas calendar Nissebanden i Grønland'.