But, Hawkgirl has undergone many changes over the decades as well, so, here's a quick little summary of the many lives of Hawkgirl!
Golden Age Hawkgirl
Hawkman in Flash Comics, and occasionally in All-Star Comics (but not being a member of the JSA team in the original run, unlike Carter, who was), though Hawkgirl did join the World War II team of the All-Star Squadron. Shiera was mostly retired when the JSA returned at the coaxing of the two Flashes (having married Carter Hall and had their son, Hector, sometime between the end of the JSA and their first revival), but Hawkgirl did go into limbo with the JSA (unlike the newest members of Power Girl and the Star-Spangled Kid) soon after the Crisis on Infinite Earths (and was officially a JSA member when she and the rest of the team came back for a brief time in the 1990s). Sadly, she and her husband, Carter, didn't make it out of Zero Hour....but did, it's complicated....and that tale requires you to meet the rest of the Hawkgirls and Hawkwomen....
Silver Age Hawkgirl/HawkwomanHawkman as married police officers from the planet Thanagar, looking for fugitive shape-changer Byth, and stayed to learn Earth crime fighting techniques while using her flight, resistance to outer space, technological advances and ancient weapons to fight the new menaces they encountered!
her to be inducted into the JLA. Soon after, Hawkman and Hawkgirl got involved in the Rann-Thanagar War (in Showcase #101-103 from June to August, 1978), and that conflict which had the Hawks exiled from their homeworld caused friction between the couple, which also led to Shayera to change her identity from Hawkgirl to Hawkwoman in World's Finest Comics #272 in October, 1981 by Bob Rozakis and Alex Saviuk, though the couple patched things up soon after halting the Rann-Thanagar War (for a time).
....but, more details of that to follow, as we meet the more current Hawkgirl!
the second Black Canary, Nuklon as Atom-Smasher and the original Flash and Wildcat) as they faced the wizard, Mordru, and continued to distinguish herself as a member of the team, including during the Day of Judgment.
Green Arrow, Atom, Firestorm, Nightwing and others), as well as fighting Helene Astar (who had killed Silver Scarab a.k.a. Hector Hall son of the original Hawkman and Hawkgirl in Infinity, Inc. #42 to #44, and was thought to be the modern reincarnation of Hath-Set, who faced Silver Scarab, and later, the Hawkworld Hawkman in Hawkman #21 and Hawkman Annual #2), and finding Kendra's parents' killer.
Kendra continued onward as Hawkgirl..
...but continued to menace the world as an undead Black Lantern through the rest of that eight issue series.
The Original Hawkgirl Returns
...truly showing what goes around, comes around, and how true love can be eternal!