Answer: constantine

AnswerCrossword Clue
CONSTANTINE

Gen. ... Rokossovsky.

CONSTANTINE

King of Hellenes, abdicated in 1922.

CONSTANTINE

Youthful European monarch.

CONSTANTINE
Eponym of the city now known as Istanbul
CONSTANTINE
Imperial convert
CONSTANTINEEmperor who called the First Council of Nicaea