Are these Venetian glassware and who made them??

Hi everyone,

I have recently come into some boxes of my great aunties glassware. I have been doing research but can't find anything that tells me who made these. My great aunt travelled all over the world in the 40's and 50's and went to Venice. So far I think these are from Venice but don't seem to be able to find out much more than that about them.

Any ideas of who made them and where I can find out some more information?

Thank you in advance for any assistance,
Carrie