Has anyone heard of Joan Doris Fashions for Rona?

Hi all,
I have this little navy blue dress, I think from the 50s, that I just finished some repairs on. I’m having trouble finding much about the designer though. Joan Doris Fashions for Rona? I’ve found a few other example online of the same designer presented as “Rona presents Joan Doris Fashions” but wasn’t able to find a backstory. I’d just like to know more then/her/it.

anyone come across this label before? Thanks!