Boy name origins & meanings Greek : Watchman Boy name variations Gregory Gregorius Gregorios Gregori Gregoire Gregor Greger Gregoor Griogair Grioghar Gregus Gragos Greis Grischa Grigor Grigori Gries Gero Greg Graig Greig Gregg Gregson Grig Grigg Grigson McGregor Family name origins & meanings Italian, Spanish, and Portuguese (Gregório) : from the personal name Gregorio (see Gregory).