Complex sentence: The 17th century Great Hall was used for formal dinners, performing plays, music and dancing and from 1816 became the family dining room and was refurnished after restoration by Barry in 1852.
Split into simpler sentences: The 17th century Great Hall was used for formal dinners, performing plays, music and dancing and from 1816 became the family dining room. It was refurnished after restoration by Barry in 1852.