Lauderbachs of KY, OH same?

James Lauderbach born in Bracken Co. Kentucky married Letitia Vermillion in 1821. They had several children up through early 1850s (when both were in their 50s!) including an ANDERSON Lauderbach.

My ancestor is Anderson Perry Lauderbach, though it's also listed in family and census documents as Lowderback, Lauderback and Louderback (which by the way the spelling that has the most participants on GenForum).
A.P.L. shows up in Lawrence Co., Ohio around 1870s when he marries Mary Ellen Sturgill.
Now Mary Ellen's stepmother is Sarah Lowderback, but her family is easily traced to Pennsylvania and I have no connection to an Anderson. Therefore, I'm very suspicious that my Anderson is the one born in Kentucky to James and Letitia. That being said, does anyone know anything about James' family?

-- Frank Taylor