I have an Isaac Rowe Walton, Jr., who was born in 1768 and died 1833 in Greensville Co, VA.
He married Elizabeth Allen. (Info from Vickie Belle at the WYCHE/WALTON website.)
The only child I KNOW for them is Maj. Isaac Rowe Walton, III (born abt. 1790), of the Greensville Co., VA, militia.