(male) Via Latin Gregorius from the post-classical Greek name Gregōrios ‘watchful’ (a derivative of gregōrein ‘to watch, be vigilant’). The name was a very popular one among the early Christians, who were mindful of the injunction ‘be sober, be vigilant’ (1 Peter 5:8). It was borne by a number of early saints. The most important, in honour of whom the name was often bestowed from medieval times onwards, were Gregory of Nazianzen (c.329–90), Gregory of Nyssa (d. c.395), Gregory of Tours (538–94), and Pope Gregory the Great (c.540–604). A famous bearer of the name in modern times is the film star Gregory Peck (1916–2003). The name has traditionally been popular in Scotland, where it is often found in the form Gregor.
Short forms: Greg; Greg(g), Greig (Scottish).
Cognates: Irish: Gréagóir. Scottish Gaelic: Griogair. Welsh: Grigor. German: Gregor. Dutch: Joris. Scandinavian: Greger. Danish, Norwegian: Gregers. French: Grégoire; Grégory (Provençal in origin, now more fashionable than the traditional form). Spanish, Italian: Gregorio. Portuguese: Grégorio. Russian: Grigori. Polish: Grzegorz. Czech: Řehoř. Croatian: Grgur. Slovenian: Gregor. Finnish: Reijo. Hungarian: Gergely.
English, Scottish, and Irish: generally a nickname referring to the color of the hair or complexion, Middle English br(o)un, from Old English brūn or Old French brun. This word is occasionally found in Old English and Old Norse as a personal name or byname. Brun- was also a Germanic name-forming element. Some instances of Old English Brūn as a personal name may therefore be short forms of compound names such as Brūngar, Brūnwine, etc. As a Scottish and Irish name, it sometimes represents a translation of Gaelic Donn. As an American family name, it has absorbed numerous surnames from other languages with the same meaning.