No. They Were Not Married.
Norma
1900-Indian Territory-Creek Nation-ED 95(?)-Sheet 5A-Page 167:
Vann, Wm head In M mar 1865 35 m4 (father=Cherokee)
Lizzie wife In F jan 1872 28 m4 3-3 (father=Black)
Beatrice(?) dau apr 1889 11
Leander(?) dau oct 1894 5
Jacobs, Scott cousin oct 1873 26 Single (father=Black)
Dawes Commission Creek Freedman census card #129 lists one applicant: Scott JACOBS.
Dawes Commission Creek Freedman census card #1341 lists three applicants: Rachel JACOBS and her two children John and Osborn. The father of the two children: Scott JACOBS.
I couldn’t locate a Rachel JACOBS or GRAYSON in the 1900 census.
Based on the available evidence I conclude Rachel and Scott were not married.
This helps?
Preston