Ya its just him. I marry him off over and over but the wife always dies before an Heir can be born.

yes its a bug after 3 turns wife dies...

Perhaps give Himilco two daughter, maybe even a brother, just as a means of getting a better starting point for your family tree. Also, if possible, maybe reducing the number of "other nobles" would be a good idea, as there are so many of them.

for now children wont show up i need to understand how make them it should be the same process with the wife but wont show up any child:(