There are websites, or blogs, which claim that R1b is one of the lost tribes, in particular of the Leahites. It was altgenhist.org....now it's Eliayhu if you search DNA and the Tribes on google....however, there is no solid evidence
R1b U152: Reuben (Franks)
R1b DF27: Simeon (Iberian Celts)
R1b...