"They collect books and lore about everything Supernatural. They're like Supernatural nerds on steroids. Dad's family was from a long line of them. Not that he knew that." Dean didn't want his mom to think John had kept secrets from her.

"Sam and I only found out after we met Henry, our grandfather." Dean hadn't like him at first, being pissed off on his father's behalf. John had thought his father had abandoned him, so of course Dean had hated him on principle. It wasn't until near the end, that he and Sam realized that Henry hadn't abandoned him - he'd been killed in the future.