As a boy's name this is a pet form of Jeremy or Gerald, or occasionally of Gerard and Jerome. As a girl's name it is a variant spelling of Gerry, and is sometimes bestowed as an independent given name, as in the case of the American model and actress Jerry Hall (b. 1956).
English and Scottish: habitational name from Hastings, a place in Sussex, on the south coast of England, near which the English army was defeated by the Normans in 1066. It is named from Old English Hǣstingas ‘people of Hǣsta’. The surname was taken to Scotland under William the Lion in the latter part of the 12th century. It also assimilated some instances of the native Scottish surname Harestane (see Hairston).