Did individual Polish nobles have large collections of swords?

[midelburgo]

There is polish seller who appears active at a Spanish site and used to be at catawiki.
I got from him two napoleonic sabres with Spanish inscriptions, no me saques sin razón and Por mi ley y por mi rey.
I asked him for the provenance, as Polish lancers were often in the Peninsula. He told me he had bought a Polish castle armoury and he was selling it by pieces.