We see in the last version of the yfull tree, which analysed a lot of Full E-M81 Y-chromosome, that E-M81 is now thought to have originated 13,900 years ago (and not 5,600 as it was thought before since the old study by Cruciani 2004).
So E-M81 may have entered Iberia during the Neolithic or even the Mesolithic.
See link below :
yfull.com/tree/E1b1b1b/
So E-M81 may have entered Iberia during the Neolithic or even the Mesolithic.
See link below :
yfull.com/tree/E1b1b1b/