I recently took a 23andme test.

My results:

Balkan - Greece: 86.2%
Italian: 9.4%
Broadly Southern European: 3.6%
West Asian & North African: 0.6%
Unassigned: 0.2%

My ancestry is wholly from the Peloponnesus regions of Arcadia, Achaea and Elis in S Greece. I also have a single Italian ancestor born between 1760 and 1850.

I was reported to be E-M5021 and maternal haplogroup H, which is I understand a common European maternal lineage.

Reading the E-M215 article in Wikipedia, I discovered that there are two related clades in Greece, namely E-V13 and E-M34. However, there was nothing on E-M5021.

Anybody can provide some more info or links?