I heard of that too and he obviously looks like an early Croat. The official coordinates of R3481 Doclea Bjelovine, Montenegro 211 - 321 CE J2b-L283>Z1043 and R3544 Gardun (Tilurium), Croatia J2b-L283>Z1043 hopefully once out will be very interesting. Are they perhaps low coverage in terms of auDNA or is it really just that the official coordinates are not out?