Simplify the following text for a Grade 8 native English-speaking person.
Original: Bennett left a large music library which is now at the Bodleian Library in collaboration with his great-great-grandson Barry Sterndale-Bennett ( b 1939 ) which continues to be available for research purposes .
Simplified: The custodian is his great great grandson Barry Sterndale Bennett ( b. 1939 ) in collaboration with the Bodleian Library at the University of Oxford . This continues to be available for research purposes .