During that time, he married my heroine's mother. Then he repudiated her because her dowry had been enchanted and so falsified. Then she had a baby.
Embarrassing, that. He opts for "don't try to reconcile" route. But some reason, when I first started to plot out the story, I thought she was a late wife. To be sure, she did have a motive to marry a man who had already had four wives, which you would need rather powerfully then. And there are many cultures in which the wife is assumed to be the barren one unless the man is actually impotent.
On the other hand, producing evidence that he could actually have a child might encourage him.
Still have to ponder how he went through so many. One died of natural causes, I think; one died in an accident trying to get away from him. One died trying magic to help her conceive, having ramped up the magic too high. The seventh wife survived him, having had a hold on him that none of the rest had. Still got to work out a few more. . . . ah, the delights of details.