Boy name origins & meanings Greek : Watchman Boy name variations Gregory Gregorius Gregorios Gregori Gregoire Gregor Greger Gregorio Gregoor Griogair Grioghar Gregus Gragos Greis Grischa Grigor Grigori Gries Gero Greg Graig Greig Gregson Grig Grigg Grigson McGregor Family name origins & meanings English : from a short form of Gregory.