TMRCA for the R1a-Y2619 Ashkenazi Levite Cluster

According to the 2017 Behar paper discussed here, the Most Recent Common Ancestor ("MRCA") of the R1a-Y2619 Ashkenazi Levite cluster lived about 1,743 years ago. As of May 23, 2020, (1) the YFull YTree for R-Y2619 estimates that the R1a-Y2619 MRCA lived about 1,250 years ago, with a 95% confidence that the MRCA lived between 1,000 and 1,600 years ago; and (2) estimates that the R1a-Y2619 Ashkenazi Levite cluster (identified as AB-067 (R1a-Z93-M582)) had an MRCA who lived between 660 CE and 809 CE, at a 95% confidence level.

Discussions of calculations of the time to the R1a-Y2619 Ashkenazi Levite MRCA, based upon data compiled through 2014, are posted here and here. A discussion of methodological issues that may explain discrepancies between SNP-based and STR-based calculations of time to an MRCA is posted here.