Yes it does reset in that sense, it is not marked on the male and male does not have any effect on the fertility chance (other than being in the same location) So if a male re-marries a new female with no children the chance goes up back to having "0" kids.@SadShogun
A question I've been wondering, in current versions is does the "number of children" penalty get reset if a man re-marries or is it also marked on the male?
Like if wife dies after having 4 kids, will getting new younger wife be just like starting over or as if she already has 4 kids?