Levi [my gg-grandfather] and Thomas Robbins were brothers, sons of Michael Robbins and Mary Boyd.The three Youngbloods you listed were siblings, the children of Andrew W Youngblood and Sarah [maiden name unknown]. These relationships are known from probate information:  Orphan's Court Records, pg 620-630;Petition to sell land belonging to Michael Robbins, deceased, 23 Nov 1853.The petition lists his children.  Deed BK9 PG322-3.19 Oct 1844, A record of land sold to the "heirs of Andrew W Youngblood" who were listed.
Samuel had three other wives. - His first one was Sarah C Wiley, with whom he had a daughter named Sarah.Sarah is listed in 1850 as a 20-yr old "idiot"with Fancis Wyley,70 and Elizabeth 64, who are believed to be her maternal grandparents. - Mary was his second wife. No children are known for her. - Margaret Rogers was his third wife, with whom he had six children. - Sometime before 1850, he married Eliza [maiden name unknown] either before or after he moved to Mississippi, where he was listed in Pontotoc Co in 1850 and Carroll Co in 1860.
I do not have anything on Mary's parents.Who were the parents of William Robins?