Did what I could with the Carson Noah White branch.
For the other one, it looks like (on Geni; I haven't verified it): Susan Roundtree married both William Roundtree who died in 1704 (with him she had Sarah Sally Kittrell )...
and Francis Roundtree as her second husband (with whom she had another daughter they also named Sarah: Sarah Walton ).
The identical birth and death dates is confusing, but Susan (their mother) was born in Virginia, as was the older Sarah.
So I would suggest removing the match and merging the duplicate William Roundtrees. Also removing the dates from the older Sarah, because they don't fit with her father's.
Both Sarahs are already connected as half-sisters to their mother, Susan (Ames) Roundtree.
However, I just noticed more possible oddities with that branch:
1) Susan (Ames) Roundtree's half-sister is fathered by Susan's second husband??
2) Susan's father, John Ames, was born "before 1695" (she was born 1683 and her mother was born 1665). And his father, "unknown" Ames, was born 1664. So his father seems more the same age as his wife.