(I’m doing this one through the/a migraine, now at day 8, I think. Yes, I’ve been in touch with my neurologist. Steroids are on the way. So is an MRI. More on that another time.)
Charles Sumner and Henry Mather Greene were brothers and architects practicing as Greene and Greene in the American Arts and Crafts (also known as the Craftsman) movement in the early 20th century. Their style has been called the “ultimate bungalow“. You’ve seen bungalows if you’ve ever driven through a neighborhood that was built in the 1910s-1930s. This design aesthetic is found across the globe, modified slightly as local needs dictated.
Homes by Greene and Greene, and later by the brothers individually after the firm was dissolved when one brother relocated, seem to be located exclusively in California, the home of the brothers as adults. I would imagine that their style has influenced others, although I wasn’t able to find any citations to support that.
The Greens practiced in relative obscurity until the late 1940s, and were fortunate enough to achieve national recognition by their peers shortly before their deaths.