The Roman period At one time it is thought that there were two Roman waterways that ran to a junction within the parish. The Aylmer Canal was constructed between 43 AD and 409 AD and was used for transport and communication through the local area. The environment around the canal during the Roman period of occupation is uncertain, but it may have been waterlogged silts or
peat lands. It is thought that the canal was partially washed away by a sea inundation during the 2nd or 3rd century. The Spice Hills Canal, built around the same period, ran along a south-west, north-east line and appears to approach and almost certainly join the Aylmer canal. Today the canals appear visible as an earthworks on aerial photographs.
Medieval The village of Tilney St Lawrence did not exist in its own right at the time of the
Domesday Book although the settlement of Islington, which lies in the very northeast corner of this parish, is listed. Today very little is left of the settlement of Islington, which is thought to have been a populous and a valuable Late Saxon settlement, with a number of salt houses and a church. This church is likely to have been the present day
St Mary's Church, which lies redundant and largely ruined. By the late 13th century, Tilney St Lawrence had overtaken Islington as the main settlement within the parish and had a church dedicated to St Lawrence. ==Governance==