Yehuda "Zakai" ben David, 29th Exilarch 'Judah II'

in 875 we find attestation that "Judah teh Hebrew" took up residence in Barcelona under the Rule of "Carlos the Bad".

French historian Henri Pirenne from the book "Mahoma and Charlemagne" states:

"But the great speciality of the jews is the trade of slaves. At the end of the IX century the center of this trade is Verdun. The trade of slaves had been banned in 779 and 781, and the ban had been renewed in 845, but despite that it went on"