It seems that you have some dates out of order ...........
You wrote "They were married in 1842 in McNairy Co. TN".
You also wrote - "Wiley BRANTLEY b. 1774 Nash Co. NC d. 1834 Blount co. Ala."
So, how can Wiley BRANTLEY be married in 1842 when he died 8 yrs earlier ???Doesn't make sense.
1830 - Name: Wiley Brantley Home in 1830 (City, County, State): Blount, Alabama Free White Persons - Males - 10 thru 14: 2 Free White Persons - Males - 20 thru 29: 1 Free White Persons - Females - 10 thru 14: 1 Free White Persons - Females - 15 thru 19: 2 Free White Persons - Females - 40 thru 49: 1 Free White Persons - Under 20: 5 Free White Persons - 20 thru 49: 2 Total Free White Persons: 7 Total - All Persons (Free White, Slaves, Free Colored): 7
1840 - Name: W Brantly Home in 1840 (City, County, State): Western Division, Blount, Alabama Free White Persons - Males - 50 thru 59: 1 Free White Persons - Females - 30 thru 39: 1 Persons Employed in Agriculture: 1 Free White Persons - 20 thru 49: 1 Total Free White Persons: 2 Total All Persons - Free White, Free Colored, Slaves: 2
Alabama Marriage Collection, 1800-1969 Name: Wiley Brantley Spouse: Matilda West Marriage Date: 31 Oct 1834 County: Blount State: Alabama
U.S. and International Marriage Records, 1560-1900 Name: Wiley B. Brantley Gender: Male Birth Place: NC Birth Year: 1817 Spouse Name: Margaret Ann Alexander Spouse Birth Place: AL Spouse Birth Year: 1822 Marriage State: of TN Marriage Place: Blount County, AL Marriage Date: 22 Jan 1839
Facts you should know about the early census records - All census records [1790 – 1840] prior to the 1850 census ONLY listed the head of household; whether male or female.
NO specific age was stated for any family member NO place of birth was stated – city, state, or country NO city, town, or village is stated – only the county; however some census takers listed the township NO street address was stated NO marital status was stated – single, married, widowed, or divorced NO family relationship was stated – brother, sister, cousin, son, daughter, wife, inlaw, etc… NO occupation was stated NO parental birthplaces are stated NO race was stated [but assume “white”]
1850, 1860 & 1870 census records do not show family relationships, marital status or parental birthplaces.
Step children are not enumerated as “step” children Adopted children are not enumerated as “adopted” Grand children are not enumerated as “grand children” Orphaned children were not enumerated as "orphan"
1850 is the 1st census that shows all family members
1880 is the 1st census that shows parental birthplaces +++