Your Mary "could" be related to my Dunehew family.They spelled their name Donahoo/Donoho and several other ways back when.I have a William Dunhew b. 1816, Tn. He was in Indiana in 1835 and had several children in Indiana before moving on to Arkansas in 1850 and to Mo. in 1860.The childrens names are Parmelia, Parazada, Surilda, Martha, John, Manerva, Louisa, William, Mary Polly and Jasper.Are any of these names repeated in your family???