Complex sentence: Of the dramas attributed to Marlowe "Dido, Queen of Carthage" is believed to have been his first, and performed by the Children of the Chapel, a company of boy actors, between 1587 and 1593.
Split into simpler sentences: Of the dramas attributed to Marlowe, "Dido, Queen of Carthage" is believed to have been his first. It was performed by the Children of the Chapel, a company of boy actors, between 1587 and 1593.