Complex sentence: Instead the parish was united to that of All Hallows Bread Street and the site of the church retained for use as a graveyard, a wall and railing being erected by subscription in 1671.
Split into simpler sentences: Instead the parish was united to that of All Hallows Bread Street. The site of the church was retained for use as a as graveyard, a wall and railing being erected by subscription in 1671.