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

[Valjhun]

Hi,

I've bouhgt lately this baroque cuttoe and I'm itrigued by the engravings on the blade.

There si among others, a Stork holding a rock, wich symbolises protection, but I cannot find any data about wich aristocratic families had a stork on their coat of arms in 18th century. There is also a marquis (?) coronet engraved.

Any help?