You and my niece have shared info on the Cheek Family,anyway I found this marriage record on Ellen Cheek.
Descendants of Ellen Cheek
Amanda was married to a John Roach, wonder if it is possible she married her sister's husband after Amanda died.
Ellen Cheek b: 1854 in Cherokee Co Texas
.. +John Rouch
m: December 17, 1871 in Brazos Co. Bryan,Tx
Not sure if you found this yet.
My Grandpa, was the Grandson of John Randolph Cheek, my grandpa was David Randolph Dawson, my Moms Dad.
I found it on this web Site http://www.brazosgenealogy.org/marr.htm