Historical clue formulations

• Second first lady, after Martha — 2026-04-05
• Second first lady — 2017-04-02
• First name of two first ladies — 2011-06-24
• First name of two first ladies — 2011-04-28
• First name of the second first lady — 2006-01-17
• Mother of John Quincy — 2001-10-23
• An Adams — 1995-11-11
• Lady's maid — 1995-06-03