Moreaux: Last Name Origin and Family Crest
Moreaux belongs to the Morel family of names, which has French roots.
The ending -aux in Moreaux marks a French derivative of Morel.
A coat of arms belongs to a particular family line rather than to everyone named Moreaux, so the heraldry linked to Morel is a starting point, not an automatic right. For the full story, order the Moreaux surname pack.