Only three kings of England have had which name, each taking the throne in 1189, 1377 and 1483?

In 1152, King Louis VII of France had his marriage annulled from which lively heiress? Which Roman emperor, who reigned from AD 117 to 138, built a famous wall across northern Britain? In 1170, Reginald FitzUrse and three other knights murdered which archbishop? Keokuk, which set a state record of 118°F in 1934, is in which state? Pendleton, which reached 119°F in 1898, a record high for its state, is in which state? Twelve avenues radiate from which Paris monument, completed in the 1830s? What is a 12-inch hot dog called? Which 12-letter word means "beneath the skin"?