Historical clue formulations

• 511, in old Rome — 2011-09-05
• 511, to Caesar — 2011-08-23
• 511, to Caesar — 2010-05-19
• Early sixth-century date — 2009-08-19
• Sixth-century date — 2003-09-06
• Sixth-century year — 2002-01-06
• Year of Clovis I's death — 1999-01-10