Complex sentence: This was the first school under the patronage of Saint Bede: possibly the name was chosen because the Cardinal's brother, a Benedictine and the Archbishop of Sydney, was Dom Bede Vaughan.
Split into simpler sentences: This was the first school under the patronage of Saint Bede. The name was possibly chosen because the Cardinal's brother, a Benedictine and the Archbishop of Sydney, was Dom Bede Vaughan.