He is probably a grandson of Henry Pendleton and Martha Curtis (and thus a nephew of the Rice Pendleton who married Elizabeth’s aunt also named Elizabeth Quesenberry), but I do not know his father.

Anderson C. Quisenberry, in his Genealogical Memoranda of the Quisenberry Family, published in 1897, writes that Elizabeth, daughter of William Quisenberry & Agnace Morton, married Ralph Dickinson. However, in his later article in Colonial Families of the United States, he lists Elizabeth's husband as Benjamin Pendleton, and Ralph Dickinson as the husband of her half-sister Ann. The correction fits with Orange Co. marriage records, which list the marriage of Benjamin Pendleton and Elizabeth Quisenberry on 2 Jun 1796.

Benjamin was listed in the 1810, 1820 and 1830 censuses in Spotsylvnia Co., Virginia.