Census records suggest that there are “gaps” in the dates of birth for the children of an ancestral couple. Don’t just conclude that they didn’t have any more or that they died young at birth. While those situations are indeed possible, it is also possible that some children were apprenticed out or lived with other family members who needed extra help in one way or another.

It’s also possible your ancestor had more than one spouse and that those “gaps” are when the ancestor was not married.