Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
WALLOP
As described in historical dictionaries
Patronymica Britannica (1860)
WALLOP. " The true and original name of this family," says Mr. Shirley, is Barton — Peter de Barton, lord of West Barton, in Hampshire, having married Alice, only daughter and heiress of Sir Robert de Wallop, who died in the eleventh year of Edwai'd I. His great-grandson, Richard, assumed the name of Wallop, and was one of the knights of the shire in the second of Edward III. Over and Nether Wallop co. Hants so called, says Camden, ' from Well-hop, that is, a pretty well in the side of a hill,' continued, till the reign of Henry V., the in-incijDal seat, when Margaret de Valoynes brought into the family the manor of Farley, afterwards called Farley-Wallop, which has since been the usual residence of the Wallops." Noble and Gentle Men,