Playing tonight, I ran into a kingdom whose sovereign was "Drake", a dragon.  Well, Drake had children with someone (it hurt my brain thinking about it).

His daughters have insanely high stats ... like ... impossibly high.  So, I married one of them to my son.  I now have a daughter in law that cannot be stopped by anything other than her sister, who has similar stats.  Needless to say, my game is broken unless I marry Drake's other daughter to my next son, kill Drake so he stops having uberchildren, and then put both my daughters-in-law on a little island in the corner of the map and refuse to use them.

Attached you can see her stats, the massive death she deals, and if you zoom nice and close, you can see (on the "Might" graph, when the marriage happened, and how she, alone, so very dominates my entire kingdom's military

http://img13.imageshack.us/img13/5990/buggydil.jpg

Coincidentally, my game crashed 2 turns later ... but I don't think it is related.