Here are some books relevant to historical research on Sutton Poyntz:

"The Gesta Normannorum Ducum of William de Jumieges, Orderic Vitalis and Robert of Torigni, Volumes 1 and 2" edited and translated by Elisabeth van Houts The "Gesta Normannorum Ducum" was a contemporaneous record of the Dukes of Normandy, written by a monk called William of Jumieges in about 1060, and then extended in 1070 to include the Conquest. It was further extended later, to include events up to the reign of Henry I. A snippet view of Volume 2 is available on the internet.
"History and Antiquities of the County of Dorset" by John Hutchins This astonishing work was written by the Reverend John Hutchins and first published in 1774, with an enlarged edition in 1796-1815. It was an outstanding piece of scholarship, at a time when carefully researched history was still in its infancy. The version usually referenced is the one that was extensively revised and updated by W Shipp and J W Hodson, published in 1861-70.
"The Buildings of Old Weymouth" by Eric Ricketts Written and illustrated by someone with a great affection for Weymouth, and a careful architect's eye. Published, in 3 Volumes, in 1977. Volume 3 deals with the villages around Weymouth, including Preston and Sutton Poyntz.
"Round and about Sutton Poyntz and Preston" by Fredy Litschi Published (second edition) in 1990. A delightful read, recording memories told to the author by long-standing residents in the two villages, as well as capturing extensive other research on the area. The book faithfully repeats what the author was told; people's memories are not always reliable, so facts sometimes need independent verification, but nevertheless, this is an important source, particularly for Sutton Poyntz.
"Medieval Gentlewoman - Life in a Widow's Household in the later Middle Ages" by ffiona Swabey This book is written about Lady Alice de Bryan, based significantly on her household accounts maintained over the period 1356-1431, many of which are preserved in the Public Record Office. There are a number of references to Sutton Poyntz, which lady Alice owned between 1390 and 1435.