Historical clue formulations

• Ancient Celtic priest — 2026-09-14
• Merlin was one, some say — 2023-09-23
• Priestly Gaul or Celt — 2020-09-28
• Stonehenge priest — 2018-02-13
• Celtic priest — 2007-04-17
• Stonehenge worshiper — 2003-06-23
• Stonehenge priest — 2000-10-08
• Roman invasion resister — 2000-05-06
• Ancient Celt — 1999-07-05
• Like some priests of old — 1998-06-18
• Stonehenge worshiper — 1998-03-15