Hippolyta Trevor was born in the 1960's on Earth-Two, the daughter of Princess Diana Trevor of Paradise Island and General Steve Trevor of the United States Army.  The Trevors had become acquainted during World War II when Trevor's rescue by young Princess Diana resulted in her coming to the U.S. and adopting the role of Wonder Woman.  The Trevors  wed sometime around 1960 when she revealed her identity  to the world and he retired from active duty.  The two set up household outside of Washington, D.C. where they gave birth to their sole daughter, Hippolyta (or Lyta).

Lyta, by all accounts, had a charmed childhood.  Inheriting her mother's gifts to at least some degree, she grew up the child of celebrity parents in the US and spending summers as the heir of royalty on Paradise Island. At some point, she began to demonstrate abilities similar to her mothers - super strength and speed, resistance to injury and the ability to leap considerable distances if not fly.  Some of these abilities had manifest by the time she was a teen-ager when she encountered the Wonder Woman of Earth-One during a visit to Earth-Two  (Wonder Woman Vol. 1 #300).

After high school, Lyta enrolled at Georgetown University in her hometown of DC but later considered her father's alma mater at the University of Southern California before settling on enrolling at the University of California - Los Angeles. There she met Hector Hall, son of Hawkman,  during an earthquake in which she leaped forward to brace a collapsing wall. The  two later met up with Albert Rothstein, godson of the Atom.  While on their Christmas break, the three are visited by Norda, godson of Hawkman from the land of Feitheria.  The quartet hatch a plant to develop new costumed identities and petition to join the Justice Society.   The barge into a meeting of the group and are quickly engaged in combat and then rebuffed (Infinty Inc).

While the young heroes salve their bruised egos,they are contacted by the Star-Spangled Kid who, along with Power Girl and the Huntress, is sympathetic to their cause.  They propose a new team - Infinity Inc. - but before the can finalize their plans, they are lured into the past by the Ultra-Humanite as part of his plan to collaborate with his previous self against the All-Star Squadron (Infinity Inc #2, All-Star Squadron #25-26, Annual #2). On their return, the battle the monstrous Solomon Grundy before settling into their new home (Infinty Inc #3).