That's absurd. Is there at least a way to get rid of dead spouses? All four of my daughters were slain in a single battle and my husband died. Is that the end of my dynasty for the rest of the game?
That seems to be the case.
From what I have seen, at most you get four children (you will get them eventually, at which point the dead of the spouse wouldn't matter so much). No replacements for any of them. If diplomacy was on, we would get to marry them off and get more offspring from them but... well, diplomacy isn't on.
Not sure if Stardock will tweak the system more or not but no matter how much I like Dynasty (which I do), it's not too random or too open. Apparently.