Answer:

SUMNER

Answer	Crossword Clue
SUMNER	Gordon ... (Sting's real name)
SUMNER	Diplomat Welles
SUMNER	Sting's real last name

SUMNER	Enzyme researcher, won half of 1946 Nobel Prize in chemistry.
SUMNER	... Welles.
SUMNER	General at Antietam.
SUMNER	... Welles, former Under Secretary of State.
SUMNER	F.D.R. aide ... Welles
SUMNER	Diplomat-author Welles: 1892-1961
SUMNER	Diplomat Welles: 1892-1961
SUMNER	Fort ... (where Billy the Kid was gunned down)

SUMNER	Abolitionist senator Charles
SUMNER	Gordon ... a k a Sting
SUMNER	Sting's last name
SUMNER	Civil War era senator
SUMNER	Fort ... (where Billy the Kid was killed)