Probably not Howell, I'm not finding any Howells in Orange County, Virginia.
Born: ca. 1720
Married: James Fitzgerald - a James Jarrell married Mary D. Yowell Nov. 4, 1837 Orange Co., Virginia - recheck date - is it 1737? Yes, it's 1837, not 1737 . . . back to the drawing board.
Yowell, Clark. Yowell: A Genealogical Collection, Somerville, NJ: C.P. Hoagland, 1931.
The Yowell Family in America
The first member of the Yowell family to migrate to the New World was Thomas Yowell, who according to this deposition given on Kent Island, Maryland, May 20, 1640, was born in the parish of Wilbarson, Northamptonshire, England. No data is available on this parish, but we find recorded the marriage of Steven Ule, of Stowe, to Margaret Lewes on October 4, 1590. Also, in Castor Parish, June 5, 1592, is recorded the marriage of Jeremy Yowle and Joane Sergeant.