Query Brock Nancy Caladonia

I have hit a brick wall on my gg grandma; Nancy Caladonia (BROCK) Bowers b. Apr 24, 1876 in AL. d Nov. 24, 1920 in Shady Point, OK. Leflore Co.. Her father is reported by family record to be J.W. Brock. Her mother is reported by family record to be Rebecca Mildred (Weir) b. ca. 1844 and d. ca
. 1915. Any help with her family tree /Choctaw decendency will be greatly appreciated!!
Rory Bowers