418 MINORCA (Balearic Islands off Spain's eastern coast)
Severus, the bishop of Minorca, claimed to have forced 540 Jews to
accept Christianity upon conquering the Island. This is the first we know of
Jews on this Island as well as the first case of Jews being forced to
convert or face expulsion. Although in general forced conversions (as laid
down by Pope Gregory I) were officially frowned upon, they were considered
valid - and backsliding was usually considered heresy. Harsher "no choice"
forced conversions began in the 9th century.