Sarah was a daughter of Francis and Alice (Savage) Thornton. She was born presumably on her father's plantation in "Old" Rappahannock Co., Virginia. She was the twin of William.[Biographies of her parents linked to this one contain erroneous information.]
Sarah married Lawrence, a son of John 1st and Sarah (Smith) Taliaferro of Essex County.
Lawrence's will, probated in 1726, named as heirs his daughters Sarah, Mary, Elizabeth and Alice, and sons John, Francis and William. (Bio by Mark Hale)