Surname Schley

Hello,

The oldest ancestor I could find Jürgen Friedrich Schley was born in 1710, place unknown and died in 1772 in Pieverstorf near Ankershagen, Mecklenburg.
He was married to Hedwig Christine Schock born in 1698, place unknown, she too died in 1772 in Pieverstorf.
Because Jürgen Friedrich owner of Schloss Pieverstorf and his wife had no children he fathered a son Johann Friedrich born in 1763 in Pieverstorf, the mother was one of the maids Marie Dewitz.
I'm looking for any information about these persons or Schloss Pieverstorf that unfortunately burned down in 1944.