There is a high chance Claude's family name - Regan - is based on the story of King Lear. There are several places named after King Lear characters in Leicester, including Goneril, Edmond and Gloucester. Not to mention the mythical King Lear was said to have founded the city of Leicester as "Cair Lerion". Just thought I'd bring that up. I would have considered it a mere coincidence myself if it wasn't for Goneril - that is definitely not a common name.