The 1840 Morgan Co., Alabama census lists:
William Gay Household
1 male under 5; 1 male 10-15; 1 male 50-60
1 female 10-15; 1 female 30-40

The 1860 Winston Co., Alabama census lists:
William Gay, 61, M, Farmer, Real Estate - $150, Personal Estate - $100; Born - NC
Emily, 50, F, Domestic, born SC
Ann E., 16, F, Domestic, born AL, married within the year
Jonathan, 21, M, born AL, married within the year
William, 23, M, Student, born AL

Letters to the Clerk of the Circuit Court, Northampton Co., NC

24 June 1848 from WILLIAM GAY, Somerville, Alabama to the Clerk of the Horphans Court
"Will you do me the favor to let me know whether Mr. Soloman Gay is yet a living or not and if he is not let me know what disposition has bain made of his Estate tho I has one other Brother and one Sister..."

From a partial list of customers who bought goods from TROUP'S GENERAL STORE, located in Somerville, Alabama from December 1835 - December, 1838. This list identifies the customer as being in the area at a a given time.
April 1837 - William Gay

Both of these items were taken from the North Carolina Genealogical Society Journal - Volume XI, No. 1, February, 1985