Complex sentence: Although Ayşe Hafsa Sultan's year of birth is known, however historians dispute that she was the daughter of Meñli I Giray of the Crimean Khanate.
Split into simpler sentences: Although Ayşe Hafsa Sultan's year of birth is known, different theories have been put forth regarding her origins. Another disputes that she was the daughter of Meñli I Giray of the Crimean Khanate.