Longer than anyone would like, really, but he does not make old bones.

After his death, a great deal of scrabbling around trying to find distant relatives in the male line (this could turn into Jarndyce v Jarndyce, pretty much). If none can be found, I suspect that it would revert to the Crown.

It's a very long time since I was obliged to study the history of the laws of property for my archive diploma!