Historical clue formulations

• Conqueror of Northumbria in 946 — 2010-02-13
• King of England, 946-55 — 2009-05-31
• Conqueror of Northumberland, 954 — 2001-01-07
• King Edmund's successor — 1995-02-06
• 10th-century English king — 1994-05-18