Hi, the brand appears to be Renata, and your label is a diffusion line by Michael Comte. I found a trademark that was registered in 1975 (around the time of the first DVF wrap dress, hence the similar style)
https://www.ipo.gov.uk/tmcase/Results/1/UK00001048348
(not related to the shoe brand Rentata)
I love the 30's style fabric. I have an original 30's dress in an almost identical print.