Joseph Mallord William Turner.

 St. Erasmus in Bishop Islip's Chapel, Westminster Abbey. 1796.

As I stumble along in my learnings, I discover deeper layers to classics than I knew existed.

Most of JMW Turner's public and published work these days seems to focus on his later life, in pushing the edges of watercolor into new territory anticipating the development of impressionism.

Going into his actual development as a painter, I discover his explorations as a young man in capturing architecture and landscapes. He has quite a body of work in cathedrals. In 1796 he was scarcely 20 years of age.

Given where I've come to in my eighth decade, this is a find to explore further.