What was the average age of conception for the last child?

We only know the average of the age of conception of the group of male descendants trace. I explained why I fancied the average age lower. What do you think could make it actually higher, hypothetically?

	▲	p1esk 11 hours ago \| parent [-]
		It depends on how many kids his descendants had. If it were, say, five kids on average, and we are tracing an average descendant, then the age of conception of child #3 can well be 33 years old.