Complex sentence: However, Edward of Norwich betrayed the conspirators to King Henry, although according to Tait, contemporary English sources which describe the conspiracy make no mention of Rutland, and his role in it is open to doubt.
Split into simpler sentences: However, Edward of Norwich betrayed the conspirators to King Henry. However according to Tait, contemporary English sources which describe the conspiracy make no mention of Rutland, and his role in it is open to doubt.