The parish church of Southwold is dedicated to St Edmund, and is considered to be one of Suffolk's finest. It lies under one continuous roof, and was built over about 60 years from the 1430s to the 1490s; it replaced a smaller 13th-century church that was destroyed by fire. The earlier church dated from the time when Southwold was a small fishing hamlet adjacent to the larger Reydon. By the 15th century Southwold was an important town in its own right, and the church was rebuilt to match its power and wealth. Lots more history on the link below.
https://en.wikipedia.org/wiki/St_Edmund%27s_Church,_Southwold