The Belfry, which was built in 1240 housed the city archives. But a big fire in 1280 destroyed the mayor part of the building, so all archives up until then were lost. This is why it’s so difficult to reconstruct the history before that time. Everything we know from before 1280 has come from documents found throughout Europe.
“Dad” wasn’t so happy on this, he had them excommunicated by some bishops but Judith and Baldwin had this annulled by the pope (Nicolas I) and he also reconciled them.