It's always fun when one's apparently disparate interests happen to intersect, especially in a useful way, isn't it? Bit like when I ended up with a heavily used grabendolch with a mostly obliterated marking of "EI WA D RASI M SSER-FABRIK" (ERN Wald Rasiermesser-fabrik) which I was only able to decipher because I knew the brand from some razors I had.
Oh cool, good sleuthing!
A little check on ebay last night and it looks like there's also another razor producer called 'Beaujeu Aine'. Aine is another common surname in that part of the world - one of the most famous winemakers in the Rhone (Beaujolais is in the Rhone) is called Paul Jaboulet Aine.
I assume this kind of two part surname is the same as what's still done in Spain today, where the first name comes from the mother's family and is kinda a bit like a middle name too. The second is from the father's family and is more like the surname proper. So the Beaujeu family clearly got around a bit!