Bogus commercial heraldry....

[O'Neille]

Are the "legitimate sources" any less "commercial". Most of what is required is a "domicile" and a direct male line of descent. Once that is established it's a matter of paying up the money. And by golly, you've just bought yourself a COA. Or for twice the money you can get a new one.

Historically, 1483 is the magic year for the College of Arms. 1318 inception and 1672 official records for the Court of the Lord Lyon. Finally, the Chief Herald of Ireland in Dublin (a division of the National Library) since 1552. You will find many examples of COAs predating these by hundreds of years. I guess you just took your chances before it all became civilized.