Tough question and one I have not thought a lot about. I’ve spent the last three months working on S.R. Griffin and his life before G&H and have not seen the fleur-de-lis in any of his work, I’m not saying he never did it I just have not seen it. Many of the early G&H’s when they just started the barrel number = caliber have it. I don’t know who brought it to G&H but you can be sure that Griffin approved it. Many of the early Bob Owen rifles have it. Mielcarek flat out copied the Parker shotgun up too having a Parker grip cap and skeleton buttplate. Of the very early makers before WWI I’ve seen it on Adolph and Wundhammer so I’ll say as soon as the bolt gun was customized in America the fleur-de-lis pattern was used.