Dabney Miller (b- c. 1750)'s lived in Henrico County, Virginia; so it seems to fit that Sara Curd may descend from Joseph Curd since he died in Henrico County, Virginia.
Both family tree links below note Dr. Thomas S. Curd was born in 1669 and died in 1769. It is likely he was born no earlier than the 1680's based on his children's birth years. Also his father, Joseph Curd is noted as born in 1640 which seems a bit early given based on birth years of his children and that he would have been 102 when he died in 1742. This could indicate there maybe other errors in these family trees in the links below.
Another family tree posted:
https://www.familysearch.org/tree/pedigree/landscape/LCJ5-2K5
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