Complex sentence: Buckhurst Place, the grand, partly-moated original courtyard house in Buckhurst Park, was abandoned by about 1605, after Thomas Sackville removed his family and household to Knole House in Kent, a large palace granted to him by the Queen in 1566.
Split into simpler sentences: Buckhurst Place, the original manor house, was a grand, partly-moated courtyard house in Buckhurst Park. The building was abandoned by about 1605, after Thomas Sackville removed his family and household from Buckhurst Place to Knole House in Kent, a large palace granted to him by Queen Elizabeth in 1566.