I found the Hackley kits you mentioned on the "R DF21 and Subclades" project at FTDNA, (I wonder why no one set up a "Hackley DNA Project"?). Unfortunately, the Hackley-Hockley common origin theory is wrong. My group of Hockleys from western Essex, England (parish of Thaxted) do not relate to your Hackleys. Our main haplogroup family is R U152 - my Big Y 700 confirmed haplogroup is R-FT83612. So now we know.