Answer: william

AnswerCrossword Clue
WILLIAMGuglielmo, in America
williamas in sweet william, a flowering plant
WILLIAMMember of the British royal family
WILLIAMRoyal Charlotte's father
WILLIAMBritish royal
WILLIAM2000s music star who writes his name with four dots
WILLIAMShortz's first name, or his existential declaration?
WILLIAMTaft or Tell
WILLIAMLeader at the Battle of Hastings
WILLIAMPrince who married Kate Middleton
WILLIAMCharles's older son
WILLIAMOrangeman.
WILLIAMTell, for one.
WILLIAMSeveral lines of European kings.
WILLIAMPrince Harry's brother
WILLIAMWinner of 1066
WILLIAMTell of Shatner
WILLIAMSinger whose stage name includes two periods
WILLIAMKing in 1066