Belén de Sárraga Hernández was born in Valladolid on 1872, during the Sexenio Democrático. She was Vicente de Sárraga's first-born who was a republican and mason. She was coming from a bourgeois family and she was born two years after the civil marriage of her parents' in 1874. Her mother was Felisa Hernández Urgón, from Valladolid and from humble origins. In 1877, Vicente de Sárraga and Felisa celebrated a new marriage: canonical.
