No that is some grade A politics, and sounds like it could the premise for all kinds of fascinating stories or games.The Raja whose title I usurped, and who is now only a mere Thakur, and who hates me with a passion because of points A and B, was only 18 when I seized his throne for myself. And his betrothed was not yet of age, so he has no children. And all of his closest dynastic kinsmen belong to the ruling dynasty of the Raj next door.
So If he dies before he spawns an heir, the ruling dynasty of the Raj next door will inherit his county and I will lose it.
As you might imagine, EVERYBODY in the Raj next door wants this guy dead.
Thus, in a spate of irony, I am now doing everything I can to keep my former liege alive long enough to spawn an heir. I immediately released him from prison as soon as the war ended, and I've already ended two plots within my own court and one plot outside of it (had to bribe the person to get her to end the plot, but end it she did). I'm also turning on my full diplomatic charm in his direction to see if I can turn his frown upside down so he'll behave himself.