Valentine "The Huguenot" Sevier (b.1678) was Valentine "The Immigrant" Sevier's (b. 1 Feb 1701) father. Valentine "the Immigrant" was the one married to Joanna Goad and was Gen. John Sevier's father and I beleive Robert Sevier(b. 1750)was one of John Sevier's younger brothers. I'm related to another of his younger brothers- Valentine Sevier (b. 1747)- and both Robert and he are said to have fought with their brother John Sevier in 1780 in an important battle of the Revolutionary war at King's Mountain, South Carolina.
Hope I was of some help,
Alison