"Mom and Dad were both only children. And, while Mom had some cousins, we didn't know about them until after we were grown up." Sam stops beating up the monitor for a moment before sighing. "Dean's four years older than me. Which, by the way, is not old enough to be left with an infant. But, around that time, Dad was still learning what he needed to hunt. Not a lot of hunters last very long, but Dad had been a Marine. It helped him get up and running faster, but...family things took a lot of hits."