Complex sentence: The old Rivington Grammar School building is now occupied by Rivington Primary School, the school was rebuilt in 1714 on its original site on land endowed on a thousand year lease granted from 21 March 1581 by George Pilkington, the Bishop's brother.
Split into simpler sentences: The old Rivington Grammar School building is now occupied by Rivington Primary School, the school was rebuilt in 1714. The original school is sited on land endowed on a thousand year lease granted from 21 March 1581 by George Pilkington, the Bishop's brother.