Good question Jane. He was the executor though, so AP and his sister had some kind of grievance against him. They had been left something in Nevill's Will actually, but the point is that they thought they were entitled to half the estate, or Nevill's estate, after the conviction, which is correct IMO.
OK. Have I got this right? They'd been left £10,000? but weren't satisfied so were suing for more. I still don't see why they'd need to sue BC, but hey! As for what they thought they should get, IF inheritance was based on June dying last, everything belonging to Nevill automatically -other than bequests- became June's. Quite naturally, future inheritances would go to June's side of the family. Tough, perhaps, but sometimes life's a bitch. I wonder if this was why it was settled out of court, ie because they weren't entitled in law?