Carolina Coronado Romero de Tejada, by Federico de Madrazo y Kuntz, 1855.
Quoting wikipedia (yes, I know...): Carolina Coronado Romero de Tejada (December 20, 1820 – January 15, 1911) was a Spanish author considered the equivalent of contemporary Romantic authors like Rosalía de Castro. She became so popular as to merit the title "the female Bécquer."
Museo del Prado