A synagogue is built in 1012 in…

A synagogue is built in 1012 in Cologne, where the Jewish presence is documented in the year 321 CE.

The first documentary reference to the Jews after 331 occurs during the time of Archbishop Heribert of Cologne (999-1021), the wise friend of Emperor Otto III.

Winheim and Gelenius, basing themselves on the Annual Chronicles of Cologne during the fourteenth and fifteenth century, report that in 1426 the synagogue was turned into a church.

They then remark that this synagogue had been in existence four hundred and fourteen years.

That would place its origin in the time of Heribert.