Complex sentence: However, many scholars have speculated about his personal religious beliefs, based on analysis of the historical record and of his published work, with claims that Shakespeare's family may have had Catholic sympathies and that he himself was a secret Catholic.
Split into simpler sentences: However, many scholars have speculated about his personal religious beliefs, based on analysis of the historical record and of his published work. Some evidence suggests that Shakespeare's family may have had Catholic sympathies and that he himself was a secret Catholic.