De-Geneville-46 has no parents, siblings, or children, but he does have the same wife as Of_Geneva-20 (by the way, neither of these names fits the surname conventions for French medieval profiles). Is there any reason not to merge him out of existence?
Peter and Piers are clearly the same person, Lord of Ludlow castle and Trim, husband of Maud Lacy, and called variously de Geneville or de Genève.