In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Benhall like this:
BENHALL, a parish in Plomesgate district, Suffolk; adjacent to the Alde river and the East Suffolk railway, 1½ mile SW of Saxmundham. It has a post office, of the name of Benhall Green, under Saxmundham. Acres, 2,156. Real property, £3,846. Pop., 678. Houses, 153. The property is divided among a few. ...
The manor belonged to successively the Uffords, the De la Poles, and the Dukes. Benhall Lodge is the seat of the Rev. E. Hollond. The living is a vicarage in the diocese of Norwich. Value, £173.* Patron, the Rev. E. Hollond The church is good; and has a brass of 1548. An endowed school has £28.
GB Historical GIS / University of Portsmouth, History of Benhall in Suffolk Coastal | Map and description, A Vision of Britain through Time.
Date accessed: 30th March 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Benhall ".