Limoges enamel
... that by royal edict, only members of certain families could be masters in the guild for makers of Limoges enamel?
... that by royal edict, only members of certain families could be masters in the <a href="./Guild" id="mwBoc" rel="mw:WikiLink" title="Guild">guild</a> for makers of <b id="mwBog"><a href="./Limoges_enamel" id="mwBok" rel="mw:WikiLink" title="Limoges enamel">Limoges enamel</a></b>?