After some maintenance only a single way was describing this prison grounds. I've performed further name maintenance by indicating the types of alternative names for the both prisons mentioned in this note.
Subsequently I've merged them under a single relation, as structurally they are now a single prison. The tags specific for each location were left at member ways. This merging action was performed in a single changeset (https://www.openstreetmap.org/changeset/151829076) alone, so is easily reversible if needed.