I would like to get some help identifying the era of the paintings and the artists

Hello,

I am a new member and new to art, so I would like to ask you for some help identifying the era of the painting and the artist (if possible). I know that it is not that easy thing to do, there are various things that must be considered, but maybe some can help me with this?

It looks like this painting is on the cardboard.

Thank you so much in advance.