“Jews Prohibited to Celebrate Passover” [Spain] [Unconfirmed]
Commentary from other sources:
1) “As early as A.D. 620 the Jews of Spain were forbidden to celebrate Passover, to contract marriages according to their own customs, to practice circumcision, to make distinction of meats, or to bear witness or institute legal proceedings against a Christian. And the penalty of these petty offences was death.
Russel, Bruce M. and John R. Oneal: The Fiddle and the Bow – Triangulating Peace, (Bob Taylor’s Magazine) Volume II