Possible Clues:

• Gen Xer's parent, perhaps
• Gen Xer's parent
• Tiny explosive device? One delivered after the war
• Postwar child
• Child of the '50s, e.g.
• Twiggy, say, acting beside filming equipment held by European director (without US agent)
• X'ers parent
• Bill Clinton was the first one elected president
• Trivial Pursuit edition
• Likely retiree of the teens