I think it was known, not widely known, that three Americans were killed in the two al-Awalaki attacks. There was an American, Samir Khan, with al-Awalaki when he was killed. He was a member of Al Qaeda in the Arabian Peninsula.
He also wrote an article in Al Qaeda's online magazine about how to make pressure cooker bombs and how to murder government workers
The third al-Awalaki's son who was not a terrorist. That was just a screwup.
The fourth guy is from Raleigh