I live in the America's, and easily traced my linage with genetic SNP's to a Carey that mysteriously appeared in Virginia around 1575 (plus or minus 10 years). That is, this line of Carey's is genetically VERY separate from other Carey's (Cary) that arrived on this side of the pond 1500 to 1800.
If I can so easily determine MY tree to a mysterious Carey, that crossed the pond, why can't the activities of Mary Boleyn be similarly sorted out?
Also, what happened to - Henry Carey and Ann Morgan's son: William Carey (one of 16 children)?
My SNP's may help there.
For the doubter's of genetic efficacy, see: