Verna Mitrios was a 21st century Human woman who became the first member of her civilization to set foot on the planet Mars.
Hikaru Sulu often told told his daughter Demora Sulu about Mitrios when Demora was a child. (ST - The Lost Era novel: Serpents Among the Ruins)
Wheeler Stinson read about Mitrios when he was a child. (DS9 novel: Ascendance)