Lucile Lloyd (August 28, 1894-February 25, 1941) was an American muralist, illustrator, and decorative painter.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Lucile_Lloyd

Central Figure of Altarpiece by Lucile Lloyd
1934 / Mural / St. Mary of the Angels Church, Los Angeles, CA

Lucile Lloyd on UC Libraries’ Calisphere: https://calisphere.org/collections/27277/?q=&rows=48

Further reading:
http://www.adc-exhibits.museum.ucsb.edu/exhibits/show/lloyd-exhib-sum/lloyd-lucile
https://livingnewdeal.org/projects/capitol-building-murals-californias-name-sacramento-ca/
https://sanmarinotribune.com/preserving-the-stoneman-mural-one-person-can-make-a-difference/