Not a Free Mason, he was a Free Cabinet.....

Bernard II van Risamburgh, sometimes*Risen Burgh* also known by his mark BVRB
*(working by c 1730 — before February 1767) was a*Parisian
"ébéniste"*of Dutch and French extraction, one of the outstanding*........

...related to corresponding entries in the daybooks of the Garde-Meuble du Roi, attest to his role in supplying*"ébénisterie"*to the Crown over more than two decades, often through intermediaries such asThomas-Joachim Hébert
*and*Lazare Duvaux.....

https://en.m.wikipedia.org/wiki/BVRB