Suffolk Manors
Having found a wealth of information on Essex from Thomas Wright's History and Topography of Essex, the references he makes to neighbouring Suffolk locations are not so easy to research as I had not found a similar account that covered Suffolk or Norfolk. Seeing that Belchamp Walter is located on the Essex Suffolk border knowledge of the towns and villages near-by is essential.
Belchamp Walter's nearest market town is Sudbury Suffolk. In fact the postal address is Sudbury Suffolk even though it is actually in Essex.

There is copy of this publication available on archive.org. I will copy and paste sections of the document that are relevant to my history of Belchamp Walter.
Apart from the town of Sudbury, there many key locations that feature in Belchamp Walter's history. These include Clare, Edwardstone and Gipping.
Clare, Suffolk, is obvious because of the de Clare dynasty and that much of Sudbury's history has involvment of the family in its history. Elizabeth de Burgh was influential in many of the developments in Sudbury
Edwardstone, could be a clue in the name, is mentioned with relation to the Montecansyo name. The connection here with respect to the Anarchy and the 12th and 13th century developments between vying elements of the Normans.
Gipping is the seat of the Tyrells, many connections here. Ties to the Wentworths of Gosfield and possibly to the "prices in the tower"
The quoted text from the image above (Manors of Suffolk)
Sudbury is descibed in The Manors of Suffolk.
Six volumes
Although I have found much information from the volume I have found and downloaded I feel that there is much missing. In the note at the start of volume 1 it says:
Sudbury and Babergh are covered but some of the other Hundreds in the middle and north of Suffolk are not in this volume.
Rushbrooke and the Jermyms are mentioned but the manor of Rushbrooke is not. Eye, Suffolk, is described as is the manor of Theltenham (the reference to the Malet family)