I have a strong claim on middlesex as the king of wales. before I could act on this claim, a countess(and rival) usurped middlesex. she is not my direct vassal, but has plenty of reason to hate me for killing her children(they would have inherited both her county and the duchy of deheubarth). she is not my direct vassal, but her liege likes me. I can't just revoke middlesex from her, for some reason. I'm 63 and depressed, not likely to live much longer, but my heir will not inherit my claim on middlesex.
(Sorry for the lack of capital letters, typing on my phone.)
(Sorry for the lack of capital letters, typing on my phone.)