Shiera Sanders Hall was the golden age Hawk girl that first appeared in the Flash #1 (1940) comic. She is the reincarnation of the Egyptian princess Chay-ara who was killed with her lover Prince Khufu by Hath-Set with a knife forged from Nth metal. Shiera’s first appearance as Hawkgirl was in All-star comics #5 (1941).
Shiera should not be confused with Shayera Hol, the Silver age Hawkgirl that first appeared in the Brave and the Bold #34 (1961) comic. Shayera Hol is an alien policewoman from Thanagar.
Lastly Kendra Saunders (current Hawkgirl) is a young woman who committed suicide and her body became possessed by the spirit of Shiera Hall (golden age Hawkgirl). Her 1st appearance was in JSA Secret Files and Origins #1 (1999)….
Shiera Hall’s spirit eventually passed on to the after life and Kendra continued on as Hawkgirl….