My Grandfather was Henery Lafayette Vaughan from Maries County is There Any Descendents from His Brothers OR Sisters IN the Area Still

I know my cousins who like myself are descended from Henery, but have lost touch with Judy Vaughan Smith, Edwin (Polo) Knox Vaughan's daughter. Does anyone in this area know her? The last time I was in touch was about 1988 in Lebanon, MO. She is/was married to Leonard Smith.
Any information about her would be greatly appreciated.

Also, looking for descendants of Henery's siblings. I am hoping when I am there next fall to visit with them and maybe seeing any pictures they might have or even stories.

Thank you for any leads or information you might have.