Complex sentence: Returning to Baltimore soon after his ordination, he was engaged in parish work there and at Pikesville, until 1857, when he was made rector of St. Matthew's, Washington, remaining in this charge until his death.
Split into simpler sentences: Returning to Baltimore soon after his ordination, he was engaged in parish work there and at Pikesville. In 1857, he was made rector of St. Matthew's, Washington, remaining in this charge until his death.