Complex sentence: At the recommendation of Queen Elizabeth, who conferred on him the honor of knighthood, he was appointed secretary to Sir Christopher Hatton, and afterwards, having been promoted to a mastership in chancery, was sent as ambassador to the king of Poland.
Split into simpler sentences: At the recommendation of Queen Elizabeth I, who conferred on him the honor of a knighthood, he was appointed secretary to Sir Christopher Hatton. Later, having been promoted to a Mastership in Chancery, he was sent as ambassador to the King of Poland.