Well, it seems you're going to have to settle with a son-in-law, boy. I know it sounds shameful, in fact, it is downright degrading having four useless daughters with their unrelated, peasant husbands.

Let's approach the situation as Methuselah would, and look on the bright side of things: as soon as your great leader dies, there will be four young contending son-in-laws vying for the throne, unless you happen to spring a nephew into the scene...

Remember, blood and iron is the key to everything.