February 27, 280 Constantine I (The Great) was born. 380 Roman emperor Theodosius declared the orthodoxy of the Nicene Creed, and made Christianity the sole religion of the empire. 837 The 15th recorded perihelion passage of Halley's Comet. 1560 The Treaty of Berwick, which expelled the French from Scotland, was signed by England and the Congregation of Scotland. 1594 Henry IV was crowned King of France.