There is a listing for Charity Brown, age 15 in Hickman Co, TN in the 1850 census. She is the daughter of Christopher and Nancy Brown. Christopher is 51 and born in NC, Nancy is 53 and born in TN. They are living near Edward Tatum family, who also ended up in Wayne Co. I am fairly certain that this is the Charity Brown that was married to Allen Hassell, but they were probably married in Hickman Co., TN and many of the records there were burned during the Civil War.
Hope this helps.