Musard, the husband of one of his half-sisters. Richmond Castle overlooks the old Roman fort at Catterick, North Yorkshire. Alan's properties extended over the entire length of Earningas Street, the old Roman road from London to the North, heading to Edinburgh; this road was renamed Ermine Street.

In folklore, Alan has an association with King Arthur: in the tale of Potter Thompson, Arthur and his knights are said to lie at rest under Richmond