Complex sentence: Duncombe's descendant, the 3rd and last Earl of Feversham, died in 1963; in 1972 the site and the adjoining woods were purchased by the National Trust.
Split into simpler sentences: Duncombe's descendant, the 3rd and last Earl of Feversham, died in 1963. In 1972 the site and the adjoining woods were purchased by the National Trust.