Gertie

Gertie is a girl's baby name of Germanic origin, a diminutive of Gertrude, derived from the Old High German Gērtrud, combining ger (spear) and þrūd (strength), meaning 'spear of strength.'

Gertie was common in the late Victorian era and early 20th century. In cinema, E.T.'s little sister in the 1982 Spielberg film was named Gertie — giving the name an endearing, slightly goofy cinematic immortality that makes it irresistible to a certain kind of parent.