Ok, this is really aggravating. I recently began an Aragonese campaign and for the most part I did quite well. By 1170, my empire stretched from Aquitaine and Toulouse in the north to Tunisia to the south. However, there was on major problem. From the beginning of the campaign to 1170, I'd had a grand total of four male heirs born. FOUR! And that includes the two that Aragon starts with. Due to this, my game ended in 1170, with my faction dissolving because of no heirs. I mean, come on! I had one king who was married at 26 and lived until he was 55. He did not bear one son! And only one daughter to boot. Is there some way of preventing this from happening? That was a very promising campaign!