Luke Graham is a Lovian painter and modern classicist sculptor. He is married to the poet and visual artist Mélisande Gallagher, daughter of Percival E. Galahad. They have a daughter, Rhiannon Graham. Graham has three brothers, all of them in the art business: John, fiction writer, Matt, composer, and Mark, painter and wood sculptor. Together they are referred to as the "Graham Evangelists", hinting at their names, which match with those of the four evangelists. The brothers' parents were art aficionados too, their father being an art critic and their mother being an amateur painter.