Althea McNish FSCD (May 15, 1924-April 16, 2020) was a textile designer who rose to prominence in London with her bright, tropical textiles inspired by the colors and landscape of her native Trinidad.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Althea_McNish

Painted Desert by Althea McNish / 1959 / Woven cotton satin screen
Various collections, including National Museum of Scotland, Edinburgh
Althea McNish on Cooper Hewitt, Smithsonian Design Museum:
https://learninglab.si.edu/collections/althea-mcnish/zTbcYQWqoKl7Lpv1
Further reading:
https://www.selvedge.org/blogs/selvedge/althea-mcnish-remembered
https://www.libertylondon.com/us/features/design-and-living/archive-althea-mcnish.html
https://www.vam.ac.uk/articles/althea-mcnish-an-introduction