Since there is no any new SNPs for I2a1b1 Dinaric (and there were several tested individuals for WTY but without results) I wonder if there is any chance to recognize some clusters among Dinaric North and South on the basis of existing STR markers. I am particularly interested in Dinaric South, as a member of group. Recently I spent some time by observing haplotypes, mostly 67 markers tested, trying to find some clearly South Slavic cluster, cluster which could be derived after Slavs setlled on Balkan in 6 and 7th century. On the first sight there is no any sign of teritorial clustering, but I believe there is one cluster which could be born in Herzegovina region (all families are from that area) within the existing I2a1b1 Dinaric South. Defining marker for this cluster could be DYS 557 with the value 17, while all remaining Dinaric South have value 16 or lower on that marker. I used one of internet utilities for TMRCA for particular group and time to most recent ancestor was about 1300-1400 years ago (or 6 to 7 century AD) time when Slavs migrated on Balkan. I know that Ken Nordtvedt wrote about specific "Croatian" cluster with value 14 on DYS 19, and this cluster also had 17 on DYS 557. In fact so called "Croatian" cluster is just younger branch of this wider cluster. Between this two clusters maybe it should be worth of noticing one cluster of haplotypes with value 12 on DYS439. So the division of haplogroup I2a1b1 Dinaric South should be: DYS 557 - 17 or 16 (1200 years ago), then among the group with 17 on 557- 12 or 13 on DYS439 (1000 years ago) and on the end "croatian" group among those which are 13 on DYS439 with the value 14 on DYS 19 (800 years ago). This is of course work of an amateur, and maybe I don't have enough data and knowledge to claim this (Use mostly public databases). That 's why I hope that someone more accurate and competent will check this markers and say is there any chance that this what I said is true. Just to say that I couldn't find no one Dinaric South haplotype outside of former Yugoslavia (except one Hungarian) which is 17 on DYS 557.