This family has been mystery to me too, the only other thing that i can think of to tell you is that i agree that if they were in the area during the time then their is most like likely a relationship.I know that later Henry "Pete" and his family went to Custer co OK.Per a cousin in CA, Nancy died there.My line- their son Demcy was already grown and stayed in Ky.Now some of the other children probably went to OK too, the younger ones and of course some of the sibling s of Henry and nancy propably went.If you find anything , please let me know, There is this info in
Knox County Marriage Book A
Gray, Henry to Wright, ClaryJuly 30, 1845by Wm. Hopper
Knox County Marriage Book B Gray, Henry to Nancy CoxAug 23, 1852 Marriage by: G.B. Foley Wit: John M. Dickinson and J.C Black
(This Henry is son of Edmond Gray)Knox County Marriage Book B Gray, Henry to Elizabeth BinghamOct 8, 1857 Mar: by: William Hopper Wit: Thomas J. Hopperand Jane Hopper 1860Knox County KY 1032 Gray, Henry 35; Nancy 30; Tina 18; Spencer 17; Dempsey 15; Arvana 12; Martha 10; Rutha 6; Julia 2.
1870 Knox Page 44 family 4(This isthe same family as above.Some of the names are a little different- but the ages all match.Dempsey is not here - he married in 1868 and is in the 1870 census with wife Nancy- oh yes another Nancy) Gray Peter 45 Nancy 42 Pertima 21 Spencer 20 Irena 16 Rintha 14 Julia 11 Margaret 9 Mahala 7 Catharine 6 Daniel 4 Then after this they moved to OK. Bonni