
I researched X2b7 for pages 123-124 in my book "The Maternal Genetic Lineages of Ashkenazic Jews". A summary of what I wrote is that X2b7 has been found in maternal lines originating from France and Spain and from the Ashkenazic community. This includes Cajuns, Valencians, and Basques. The Ashkenazic version's mutations are identical to those in Spain.
I matched with an X2b7 yet I'm a X3a1 which puts me in the Middle East, more specifically in the Druze region from Northern Israel thru Lebanon and I believe Damascus. However, I do have some French (France) and Portuguese/Spanish heritage which may account for the connection between the two Hap groups.