[1] She was the daughter of Tomasa Erostarbe and Cipriano Tizón, a photographer and owner of a photography shop.

[2][3] She met Juan Domingo Perón in 1925, during the years of his military career; she was working as a teacher at the time.

They became a couple, and Perón affectionately called her "Potota," a childish play on the word "preciosa," meaning "precious.

Later in his life, during his many years as president of Argentina, Perón rarely mentioned his first marriage, as his second and third wives, Eva and Isabel, loomed larger.

Tizón is generally lesser-known among Argentines, in part because during the years of their marriage Juan Perón was not yet a national figure.