Haplogroup J2 and Mesopotamians.
"J-M172 can be classified as Greco-Anatolian, Mesopotamian and/or Caucasian and is linked to the earliest indigenous populations of Anatolia. It was carried by Bronze Age immigrants to Europe, and ultimately descends from the Cro-Magnon population (IJ-M429 Y-DNA) that emerged in Southwest Asia around 35,000 years ago."
Wikipedia.org - Haplogroup J2 M172.
http://en.wikipedia.org/wiki/Haplogroup_J-M172_(Y-DNA)
"Sumer (from Akkadian Šumeru; Sumerian ki-en-ĝir, approximately "land of the civilized kings" or "native land" was an ancient civilization and historical region in southern Mesopotamia, modern Iraq, during the Chalcolithic and Early Bronze Age. Although the earliest historical records in the region do not go back much further than c. 2900 BC, modern historians have asserted that Sumer was first permanently settled between c. 4500 and 4000 BC by a non-Semitic people who may or may not have spoken the Sumerian language (pointing to the names of cities, rivers, basic occupations, etc. as evidence). These conjectured, prehistoric people are now called "proto-Euphrateans" or "Ubaidians", and are theorized to have evolved from the Samarra culture of northern Mesopotamia (Assyria)."
Sumer.
http://en.wikipedia.org/wiki/Sumer