Conversation so far:
what are moors?
The term Moors refers primarily to the Muslim inhabitants of the Maghreb, the Iberian Peninsula, Sicily, and Malta during the Middle Ages.
what is heraldy?
Heraldry is a broad term, encompassing the design, display, and study of armorial bearings, as well as related disciplines together with the study of ceremony, rank, and pedigree.

Question: when did this is happen?
Self-contained rewrite: when did the moors in heraldry happen?