Gary · proper noun1
Medieval short form of Germanic compound names beginning with gari or geri ("spear"), such as Gerard, Garrett, Gerald, or Gerbert. Cognate with the Scottish and Irish name Garaidh. Sometimes also a short form of Gareth. The popularity of the given name in the 20th century is due to the American actor Gary Cooper, whose stage name was invented by his agent, a native of Gary, Indiana.
Gary · noun2
Ellipsis of Gary Glitter.
Etymology from Wiktionary, CC BY-SA 4.0.