By any chance are your McClures a line from VA & PA ?
About 1830, Susannah McClure married John LANE Jr. in Washington Co PA. She was born in VA (1850 Census) and John Lane Jr was born in MD. They moved to Holton, Shelby Twp, Ripley Co in the early 1830s, probably moving with other family. I don't have Susannah's parents or siblings but in a letter she wrote in 1879, she tells her sister in law in Washington Co PA to "say hello to Samuel McClure." I've not been able to pinpoint where this Samuel was or who he was (relationship to Susannah).
I have the Lane-McClure decendants - well, a lot of them. There are still Lane descendants of this family in Holton.
I would love to find more info on the McClure line. Could you all check and see if this Samuel McClure you are talking about lived anywhere near a John Lane Jr?
Off the top of my head I can't remember all the married surnames that come from the Lane-McClure line... one was BRAMWELL. but I don't have the others within easy access.
Please email if we connect.