Complex sentence: He was first educated at Gloucester, then entered St Edmund Hall, Oxford, at Michaelmas 1634, proceeded B.A. on 20 April 1638, and M.A.6 March 1641.
Split into simpler sentences: He was first educated at Gloucester, then entered St Edmund Hall, Oxford, at Michaelmas 1634. He subsequently proceeded with a B.A. on 20 April 1638, and an M.A. on 6 March 1641.