At age 40 in 1781, which American traitor moved to London but was denied further military service?

At age 25, who won the $25,000 Orteig Prize for the first solo nonstop flight between New York and Paris? At age 26, Jonathan Dayton of New Jersey was the youngest signer of which 1787 document? At age 31 in 1977, who became mayor of Cleveland? In 1998, which former basketball star briefly hosted a late-night talk show called "The Magic Hour"? At age 40, which singer won three Grammys for "Nick of Time," including Album of the Year for 1989? At age 6 in 1935, which child star won a special miniature Oscar for her outstanding contribution to screen entertainme… At age 61 in 1941, which actor made his screen debut in "The Maltese Falcon" as Kasper Gutman? At age 70, which former action star won the Best Supporting Actor Oscar for 1998's "Affliction"?