Historical clue formulations

• Wilbur Wright's brother — 2020-06-09
• First name in popcorn — 2016-07-28
• First name in aviation — 2013-04-28
• Redenbacher of popcorn fame — 2007-12-09
• First name in popcorn — 2006-04-09
• Newsmaking brother of 1903 — 2000-05-14