I have a Wm. and Lucy Gallion with a large family in the 1910 Lauderdale Co., MS census..Wm. is listed as 43 and Lucy as 40 which would make them too young to have married in 1876..however, censi dates are notoriously wrong.
I am not at all sure who this Wm. is. There were no Gallion families in Humphrey Co., TN at any time during the 19th century..or for that matter the 20th. I have guessed that Wm. could be a son to Thomas "Rufus" Jefferson Gallion and his wife Delphina Elizabeth who were in the 1870 Alcorn Co., Miss. census. But that's a guess w/o any corroboration at this time.
Did Wm. have any siblings? A sister Flora? or Lillie? brothers Charlie or Toby?