Hi Crystal,
Thanks for your reply and good luck with your search under other spellings. I did notice in the Intro. to the 5 generations of Hearseys book that a Mr. Hersey was thanked for his contribution to sorting out the various branches of the family, so, presumably, we are one family.
I'm in touch with a Hersey in London whose family lore has it that they're Gypsies, seriously, and I have found a Hersey in an old English census listed as Gypsy (actually, another word, which escapes me, which meant Gypsy.) I've wondered if this family is actually descended from the Anglo-Indian family and forgotten their true roots. Anyway, since they don't know their pedigree, their yDNA results wouldn't mean much.
I also wrote to a woman, via Facebook, who is descended from the Hearseys, but she didn't reply. Would you be she? She uses "Round" as part of a pseudonym.
I'll let you know if I get any leads.
John