It is possible that:
* You are mistaken about the name of the painting or the artist. Double-check the spelling and information about the artwork.
* The painting is not widely known or documented. There may be less famous works by Rhys-James that are not readily available online.
If you can provide any additional details, such as a description of the painting, a source where you saw it, or any other relevant information, I may be able to help you find more information about it.