Dorcas descends from the first Alderman in America, John Alderman, and is listed on p. 548 of the ALDERMANS IN AMERICA book.(This is available on line from Higginson Books.)Her children are also listed.It states that they lived in Vienna, Ohio.It goes on to outline two children's lines, Lorinda & Erastus.
Hope this helps, cousin!(I, too, am descended from John Alderman.)