Historical clue formulations

• Classic symbol of purity and grace — 2024-02-03
• Magical creature associated with rainbows — 2023-01-01
• Start-up worth a billion dollars, in a modern coinage — 2020-01-23
• Creature on Scotland's coat of arms — 2018-07-31
• Ride on a merry-go-round, maybe — 2018-07-11
• Elusive horse with a horn — 2018-06-26
• Figure on Scotland's coat of arms — 2012-01-19
• Part of Scotland's coat of arms — 2010-10-23
• Mythical symbol of purity — 2007-03-29
• Lion's combatant for the crown, in "Through the Looking-Glass" — 2005-02-26
• Figure in some mysterious 15th-century tapestries — 2001-08-17
• Creature caught only by a virgin maiden — 1997-07-29