Complex sentence: Jeffrey Dunstan (1759?--1797), mayor of Garrett, was a foundling, and as such was reared in the parish workhouse of St. Dunstan's-in-the-East.
Split into simpler sentences: Jeffrey Dunstan (1759?--1797) was the mayor of Garrat. He was a foundling, and as such was reared in the parish workhouse of St. Dunstan's-in-the-East.