Uriah

In 2015 a paper was published which tried to model the major admixture events of the last 3,000 years in West Eurasians. Table S5 provides a list of all the computed events and guesses of their magnitude/timing: https://www.cell.com/current-biology/fulltext/S0960-9822%2815%2900949-5#app3 … I want to talk specifically about the Greeks

The Greek cluster is modeled as 65/35 mix of two populations most like today's Cypriot Greeks/Lithuanians and the estimated date of the mixture is 630 AD, which would conform with the arrival of Slavic tribes onto the mainland.