The Adams and the Humphreys families were related because of the two marriages of Mary White. She was the grandmother of both Horatio Humphreys (by her first marriage to John Humphries) and Sylvester Adams (by her second marriage to Richard Wood). Susannah's husband was the "half" first cousin of her father.
At the time of Horatio's death, he and his family owned about 7,000 acres of land in Benton County, Tennessee. Many of his children moved into Sharp County, Arkansas. There was at least one son, but only know the name of a daughter, Catherine Humphreys, who married Charles Box and was the mother of 13 children. She died in 1860 at the age of 49.
It is interesting to note that William Humphreys, the first son
of John and Mary Humphries, moved into Onslow County, North Carolina.
These are the ancestors of Herbert Horatio Humphreys, the former Vice President
of the United States.