Olive Byrne met Marston in 1925, when she was a senior at Tufts; he was her psychology professor. Marston was already married, to a lawyer named Elizabeth Holloway. When Marston and Byrne fell in love, he gave Holloway a choice: either Byrne could live with them, or he would leave her. Byrne moved in. Between 1928 and 1933, each woman bore two children; they lived together as a family. Holloway went to work; Byrne stayed home and raised the children. They told census-takers and anyone else who asked that Byrne was Marston’s widowed sister-in-law. “Tolerant people are the happiest,” Marston wrote in a magazine essay in 1939, so “why not get rid of costly prejudices that hold you back?” He listed the “Six Most Common Types of Prejudice.” Eliminating prejudice number six—“Prejudice against unconventional people and non-conformists”—meant the most to him. Byrne’s sons didn’t find out that Marston was their father until 1963—when Holloway finally admitted it—and only after she extracted a promise that no one would raise the subject ever again.
Wonder Woman’s appearance in the early golden age of comics made her the first prominent female superheroine. The psychologist William Moulton Marston created Wonder Woman somewhat as a counter reaction to the presence of prominent male superheroes (at this time Superman, Batman and Captain America), as well as a counterbalance to the "blood curdling masculinity" that was dominant at the time, with the hopes that the character could serve as an inspiration for young children (though in certain ways it was geared more towards female readers.) Marston had been partially motivated to create this character because of the accomplishments of his own wife, who was also an accomplished academic at a time when it was difficult for women to fulfill this role. As a result, the first Wonder Woman series contained many complementary articles and features which sought to highlight the inner power of women. There were articles for instance on the different career paths that women could pursue (according to the standards of the 1940s) as well as a series of stories on famous and accomplished women, called the Wonder Women of History. Marston introduced the character in All-Star Comics #8 in 1941. She became the lead character in Sensation Comics in 1941, and got her first solo book in 1942.