In a note from the book entitled THE TODDS OF CAROLINE COUNTY by Ann Todd Rubey (1960) referring to page 338, I have the quote:
"Nancy Boulware, daughter of Mark Boulware II was married to Henry Samuel.They had five children, three of whom were Andrew, Henry, and Nancy.Henry (Jr.) married Mrs. McCon and had Thomas, Sallie, and Jackson.Nancy married Mr. Pitts."
Other sources indicate that this Henry who married Boulware in 1797 was the son of Thomas Samuell and Ann Brooking and hence the brother of the Andrew you mentioned. The note above indicates that this Henry and Nancy had a son Henry (Jr.) probably born about 1802 (based on his parents marriage year of 1797) who married a McCon and had at least the above named three children: Thomas, Sallie, and Jackson.
Could this be the Henry you are looking for?
What other information do you have on your Henry other than his Central Point birth place?