Historical clue formulations

• Roman emperor who overthrew Galba — 2022-12-24
• Roman emperor after Nero and Galba — 2022-07-10
• Roman emperor of A.D. 69 — 2018-08-07
• Roman emperor who overthrew Galba — 2017-08-10
• Emperor after Galba — 2016-11-11
• Roman emperor — 2014-04-20
• Emperor of A.D. 69 — 2012-08-21
• Roman emperor of A.D. 69 — 2012-06-19
• Early Roman emperor — 2010-10-09
• Roman emperor after Galba — 2010-01-06
• Roman emperor with a three-month reign — 2007-10-21
• Emperor for only three months — 2007-03-30
• First-century Roman emperor — 2005-10-30
• Roman emperor for just three months — 2005-10-13
• Roman emperor after Galba — 2004-01-22
• Vitellius succeeded him — 2003-12-05
• First Holy Roman emperor — 2002-10-25
• Emperor of A.D. 69 — 2002-09-15
• Roman emperor in A.D. 69 — 1998-07-28
• Roman emperor after Galba — 1997-10-07
• Emperor after Galba — 1997-09-11
• Galba's successor — 1995-10-22
• First-century Roman emperor — 1995-07-07
• First-century Roman emperor — 1995-06-18
• Roman emperor of A.D. 69 — 1995-05-16
• Roman emperor — 1994-12-06
• Emperor of A.D. 69 — 1994-01-02