One names, two worlds. Each world is written whole, and each has its own readers' list, so you only hear about the books you came for.
R. Clifford Dixon writes about ordinary people under pressure, and the difficulty of telling a true light from one that is almost the same: The Endurance, ordinary lives in countries across the world in our own time, and The Kept Flame, the seven cities of Revelation as they actually stood under Rome.