I am also researching the Sandy Cohea family, as my ancestor Sophronia "Fronie" Barnes was also married to him. If I am correct, your husband's ancestor was Rebecca Haywood, Sandy Cohea's first wife, who may have died from complications following the birth of her last child around 1880-1 (the baby died the following year). She had a son from her previous marriage named John Haywood. I haven't traced that line of the family any further, but have more so been looking for information on Sophronia, whose son (from a previous marriage) Calvin Barnes is my great-grandfather.
I have found the cemetery where Sandy, Rebecca, Sophronia, and some of their children are buried on findagrave.com. I hope that you are still checking mail on this, as I would love to chat further with you!
Great-great-granddaughter of Sophronia Barnes Cohea (also spelled "Cohee"), 2nd wife of Sandy Cohea.