I believe you will find the information you're seeking is listed in the 1850 census for McNairy County and 1860 census for Madison County (mistakenly transcribed as Macon County):

Elisha K Brown, b. 1819 in Tennessee or North Carolina m. Emily Brown, b. 1826 in Tennessee. Their children are:

Mary Brown F 1844 in Tennessee, USA
John Brown M 1845 in Tennesse, USA
Henry Brown M 1846 in Tennessee, USA
Josiah Brown M 1847 in Tennessee, USA
James Brown M 1848
Thomas Beulah Brown M 1849 in Tennessee, USA
William Jasper Brown M 15 Dec 1850 in Tennesse, USA
Elisha Brown M 1853 in Tennessee, USA
George Brown M 1854 in Tennessee, USA
Elizabeth Brown F 1855 in Tennessee, USA
Robert Brown M 1858 in Tennessee, USA

What is your source for the maiden name of Emily? Do you happen to know the names of her parents?

I am looking for the name and birth dates of the father and mother of Elisha K Brown b. 1819. If you have this information, I would very much appreciate having you sent it to me.

~Elizabeth Eells