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Judah ben Kalonymus
Judah
ben
Kalonymus
ben
Moses
of
Mainz
was a
Jewish German
scholar
,
halakhic
authority
, and
kabbalist
. In his early years, he
studied
in
Speyer
under
Shemariah ben Mordecai
who
taught
him
mysticism
. During the
Third Crusade
, Judah helped his
community
to
prepare
for the
Anti-Semitic
attacks to
follow
. Among his
pupils
were his son
Eleazar of Worms
,
Joel ben Isaac ha-Levi
and
Baruch ben Samuel
.