Complex sentence: His numerous pleas to Lord Burghley fell on deaf ears, but on Archbishop Grindal's recommendation he was eventually released, in 1568, on orders to live quietly in Lewisham.
Split into simpler sentences: His numerous pleas to Lord Burghley fell on deaf ears. But on Archbishop Grindal's recommendation, he was eventually released, in 1568, on orders to live quietly in Lewisham.