1860 census of Marengo Co., AL has Minerva with her father, Thomas Hennessee from Ireland and her siblings, William S, Frank, Lucian and Cornelia Hennessee.
1870 Census Dayton, Marengo Co., AL has Minerva married to Robert (Carrol) the way spelled in census, with the two boys, Robert Jr and William D, and her siblings, Frank, Lucian and Carry Hennessee. Although census does not tell what the relationship is, Minerva would have been too young to give birth to these children. 1860 says she was born NC, 1870 AL, 1880 SC, 1900 AL, so not sure where she was born. I am still trying to locate ship Thomas arrived on or immigration/citizenship papers and will contact you if I find more.