I don't know anything about the Indian part.
But your Francis Elizabeth was a sister to my great, great grandfather John Capshaw who married Emily Louise Ferguson.
Source Citation: Year: 1870; Census Place: District 6, Dekalb, Tennessee; Roll: M593_1524; Page: 165; Image: 331.
1870 Census - Dekalb County, Tennessee - 6th Civil District
Post Office: Smithville
August 18, 1870
Dwelling 67 Family 67
Value of Property
Name Age Gender Race Occupation Real Personal Birthplace
Capshaw, John 32 M W Cooper 500 TN
Capshaw, Emily 31 F W House Keeping TN
Capshaw, Louisa 10 F W TN
Capshaw, Josiah 7 M W TN
Capshaw, John F. 4 M W TN
Capshaw, Sarah 2 F W TN
Fisher, Rebecca 24 F W Domestic Servant TN
Capshaw, Elizabeth 16 F W Domestic Servant TN
Rebecca Fisher and Elizabeth are his younger sisters.