Oh, brother! These Manning boys have plenty of sibling competition

Freud once said that sibling rivalry is an extension of the Oedipus complex, that it’s a competition among brothers to gain the attention of their mothers and sisters to gain the love of their fathers.
None of this has anything to do with this particular column on the Brothers Manning, but simply to show you I was awake during my college psychology class.
No, more to the point, this is about great siblings in sports and human history.