Stork holding a stone - coat of arms on a baroque hunting sword cuttoe

[Valjhun]

Yes, some symbols like military coat of arms, moon, sun, stars, pandurs, ecc. are widely applied, but a stork? It is the first time I see a stork engraving on a 18th century blade. My guess is that it is not a generic symbol and toghether with the marquese crown could point towards the owner.