My great grandmother was Harriet Viriginia Caroline Fairfax and married to Charles Mercer Brown.. Her father was Col Franklin B.F. Fairfax - married to Mary Elizabeth Garrett. His father was Col John Fairfax - married to Nancy Loid Franklin. His father was William Fairfax - married to Elizabeth Buckner. His father was John Fairfax (died 1735). His father may have been Thomas Fairfax who came to Calvert County, MD from England in 1667. I am in possession of a Brown Geneaology book (dated 1930) which devotes quite a bit of information on the Fairfax family particularly in Virginia.