there appears to be a German-Rhine Z140 suibclade ... distinctive markers: a low 413a=21 and 20 [usually 22] and a non-Z140 447=23 [usually 22]
surnames include: Z140+ FRIDMAN, GOFF, RIETMAN, SHTRUNOV, DIMOND, GAUS [NOFFS], and many others who are M253+, attached to FERNANDES, TROYER and others who are 413a=21 but 447=22