Complex sentence: The Patriarch consecrated Matthew as metropolitan in Dionysius'place, a claim upheld by the Travancore government; though he remained in office until his death in 1877, the rift never healed, and ultimately Matthew's supporters formed an independent church.
Split into simpler sentences: The Patriarch consecrated Matthew as a bishop and he remained in office until his death in 1877. Though the rift never healed, and ultimately Matthew's supporters formed an independent church.