1901 - Shiera Sanders is born.
1919 - 18-year-old Shiera goes to college to study archaeology.
1929 - 28-year-old Shiera discovers that she is a re-incarnation of Chay-Ara, the thanagarian princess. She becomes Hawkwoman.
1939 - WW2 begins.
1941 - After the attack on Pearl Harbor, The Justice Society is formed, including 40-year-old Shiera.
1945 - WW2 ends.
11 years ago - 50-year-old Shiera returns from Ragnarok with the rest of the Justice Society and joins the Justice League.
9 years ago - When the Justice League collapses, 52-year-old Shiera semi-retires to curate the Hall Museum, although she still regularly goes on adventures with Carter.
4 years ago - 57-year-old Shiera is severely injured in battle. she retires to her Egyptian villa with Carter.
Shiera's massive popularity comes largely from her role in the Justice League animated series, where she was an absolutely fantastic character. Interestingly, during the series entire run, the Hawkgirl in the comics was actually Kendra Saunders.
Our Shiera is actually not the Shiera from the animated series, because we've chosen to make the Thanagarians a lost race. Instead, she's the original Shiera from the comics, the wife and partner to Carter Hall. Telling the story of their courtship was actually a lot of fun, imagining both their meeting as professor and student and their relationship deepening as they go on their expedition together; when they discover that they are reincarnated from a pair of ancient alien lovers.
Shiera is a figurehead for the awesome female characters in the DC Universe. She's a bold warrior and awesome hero, and one of the few female companion characters that has always been considered an equal parter to her male counterpart. While we've retired the original Hawkman and Hawkwoman so that Kendra's Hawkgirl can carry on their legacy, It wouldn't be the DC we all love without the career of the inimitable Shiera Hall.