Hector McDonnell is an Irish painter whose primary subject appears to be room interiors, from humble to palatial. He approaches these with loose, painterly confidence.
In many of his compositions, light through windows is the dominant player, cascading across furnishings and illuminating floors.
McDonnell also appears to take delight in complex floor patterns and architectural elements, giving his work an appealing visual richness.
He is also and author and cartoonist, though in my brief search, I did not find much in the way of examples of his cartoons or illustrations. There is a brief interview with McDonnell on Studio International.