Photos of real-life William Marston, his wife Elizabeth, and Olive Byrne are shown at the end of the movie.
SPOILER: Epilogue: "Marston passed away in 1947 from cancer. Elizabeth and Olive lived together for another 38 years until Olive's death in 1985. Elizabeth lived to be 100 years old. After he died, Marston's overtly sexual motives were stripped from the Wonder Woman comic book...along with her super powers. In 1972, Gloria Steinhem reclaimed Wonder Woman by putting her on the cover of the first issue of Ms. Magazine. Wonder Woman's superpowers were eventually restored. As a tribute to the woman who raised him, Peter Marston created a Wonder Woman Museum in Connecticut, which houses 4000 items. Peter passed away in January 2017. Wonder Woman remains the most famous female superhero of all time."