Individual Details

Here would be a clue to this elder daughter of Alexander's:
21 Oct 1844, Daniel Coleman Jr., marriage bond to Martha Ann Walters. Champness A. Terry, Bondsman. Alexander J. Walters, Father.
[If she's marrying in 1844, she's probably at least 18 - or born say about 1825 which works for both 1830 & 1840 censuses] More likely she was 16 or 17, born after Alexander's marriage to Louisa Wilson.


There are two Daniel Colemans in Pittsylvania Co in 1850, neither marked as a senior or junior.
One is age 38, and has Elizabeth, age 17, in his household. Probably a wife, but could be a daughter - NOT Martha Ann for sure. [If this is Daniel Jr as it would seem to be, perhaps Martha died.]
The other Daniel Coleman was age 82, his wife Anna P. age 72. [This was the Daniel Coleman who married Anna Payne Harrison, a sister to Mary Dillard Harrison who married Edmund Richardson that were parents of Ann Eliza Payne Richardson, first wife of Azariah Graves Walters.]
No help there.
There was also a Daniel S. Coleman in Caswell Co NC in 1850. He was age 65, b. VA and had living with him, Ann S. age 23, Spillsby age 22, and Bartlett T., age 21, all born in Caswell Co.

http://ncccha.org/pdf/coleman/colemanfamilygenealogybykathleendawson.pdf
(13) Daniel Coleman, Jr. m. (1) Martha Ann Walters
31 Oct 1820 – 26 Apr 1905 abt 1824 – 04 Feb 1848
They married 22 Oct 1844 in Pittsylvania Co., VA. A listing for Green Hill Cemetery in Danville gives his date of birth as 31 Oct 1821. Martha Ann was the daughter of Alexander Walters.
(a) John Alexander Coleman
Daniel Coleman, Jr. m. (2) Margaret Elizabeth Ayers/Ayres [ 23 Jul 1827 – 31 Jul 1905]
They married 10 Oct 1848.

Birth	Ca 1827	Virginia
Marriage	24 Oct 1845	Pittsylvania County, Virginia - Living
Death	4 Feb 1848

Spouse

Living

Father	Alexander J. Walters (1805 - 1848)
Mother	Louisa Wilson ( - )