Don't know if this will help:
Abstracts of Wills of the State of South Carolina 1740-1760 by Carolina T. Moore. Page 198
JOSEPH RIVERS, St. Andrew's [Parish], James' Island, planter. Wife: ELIZABETH. Sons: ISAAC, land and brick dwelling house; JONATHAN, under 21 years, use of said land and house until his marriage;SAMUEL; JOSEPH, deceased. Dau:ELIZABETH WITTER, wife of THOMAS WITTER. Grandsons: THOMAS PARROTT, son of BENJAMIN and ANNE PARROTT; JAMES RIVERS, son of ELIZABETH RIVERS, widow of my son JOSEPH,deceased. Granddaus: SARAH, eldest, and ANNE PARROTT, daus. of BENJAMIN and ANNE PARROTT; REBECCA, RUTH, and RACHAEL RIVERS, daus. of ELIZABETH RIVERS and JOSEPH RIVERS,deceased; ANNE WITTER, dau of THOMAS and ELIZABETH WITTER. Mentions: residue of estate to all my children, viz.; SAMUEL,ISAAC, JONATHAN RIVERS, and ELIZABETH WITTER. Exors: Messrs. ISAAC RIVERS, WILLIAM SCREVIN, JR. THOMAS DIXSON of James Iland, planter. Wit: W. BESSELLEU, JAMES SANDIFORD, GEORGE RIVERS.
Date written 23 Aug. 1755 Proven: 7 NOv. 1755