I'm sure you've probably found the connection by now, but I'm also connected to Mary Boleyn through the West family. I'm 17 degrees from her; the part that may interest you goes like this:
Mary Boleyn's daughter Catherine [Carey] had a daughter Ann Knollys;
her son was John West, his son was John West, whose daughter was Anne West;
her daughter was Anne Fox, whose son was Leonard Claiborne, whose son was Richard Claiborne, whose daughter was Mary Claiborne;
her son was James Chisum, whose daughter was Rebecca Chisum, whose daughter was Lucinda Robinson, whose daughter was Sallie Jordan, whose daughter was my g-grandmother, Mary Ella Mullen.
I hope this helps in some way, or that you've already found the connection you needed. One of the replies seems to be more what you're looking for, but I never know!
Cheers!