A posting on a genealogy site--Senator William Cocke and Keziah Sims, a Mystery

What following is a posting on Genealogy.com. I am hoping that putting "Senator" in the heading may catch attention. My GGGG Grandmother went from extremest poverty--soldiers from Fort Hampton burning her out of house and home--to that dogtrot cross hall two story pile of logs her second husband joked about. But where did she meet the man and what was her maiden name? Here's the post.

I am a stepchild here. My GGGG Grandmother, Keziah Sims, widow of Parish Sims (who died at Sims Settlement in 1807) remarried--to William Cocke. Maybe she knew him in Hawkins Co., TN, or maybe she met him when he became agent to the Chickasaws. In any case, she lived with him in the dogtrot cross hall two story log house on the bluff above the Tombigbee in Columbus, Mississippi, and died there, in 1820. Cocke was obviously good to her children, for Martin stayed around into extreme old age as a teacher, a minister, and a translator of Choctaw. Bartlett Sims became the first Sheriff. (Not his cousin Bartlett Sims who was important in the Texas Republic.) My GGGG Grandfather Absalom Sims (born 1791) was there in 1820 (helping found the Piney Grove Methodist Church) but by 1830 was in Pope Co. Arkansas, where he stayed. Now, Cocke was an important man--one of the first 2 U S Senators from Tennessee--a King's Mountain man, a buddy of Daniel Boone and sometime buddy of Andrew Jackson.

Someone ought to know the maiden name of his 2nd wife, Keziah Sims. They have a joint tombstone. I am pretty sure the accounts that give her first name as Grizel are wrong--Grizel whoever married Cousin Parris Sims, who ended up in Giles Co. TN. (My GGGG Grandfather was Parish, not Parris.) Worth Ray arbitrarily says that Keziah (meaning Keziah Royster) married Parish Sims. Ray was confused about Bartlett Sims (not knowing there were cousins of the same name and about the same age) so I am suspicious of his putting my Sims men in Granville Co. I am hoping against hope that one of the distinguished descendants of my distinguished Step-Grandpa knows what his second wife's family name was. Now, we know that there was a harmonious relationship with the young stepchildren and the Cocke family, or think we do, from the description of the way everyone gathered for years at the Ovid Brown house, Lucinda Sims Brown's house. Cocke's descendants really were distinguished--but did they keep records about Keziah? All I need is a little teensy clue . . . .
Like where they met and where they married . . . .
But mainly what her maiden name was.