Writer. Important figure of Carlism. Daughter of the King Miguel I of Portugal, she was born in Barviera, where his father had gone into exile. Educated at the Bavarian court and during the Second French Empire, she was always linked to the legitimist ideas of the Carlism, due to familiar roots (nephew of the princess of Beira, wife of Carlos María Isidro) and also to her marriage with Alfonso Carlos de Borbón y Austria-Este, duke of San Jaime, brother of the Carlist pretender (Carlos VII). In 1871 he moved with her husband to Catalonia, where he took charge of the Carlist troops of the Eastern region. She interfered with him in the battles developed during the Third Carlist War (1872-1876) in the south of Aragon, Cuenca y Guadalajara. After the end of the Carlist War she established her residence in Graz (Austria), where she began the writing of "Mis memorias" about our campaign in Catalonia in 1872 and 1873. Due to her deep personal beliefs, she was the main supporting of the legitimist pretentions during her long exile in Austria. By the beginning of the 20th century she settled temporarily in Spain. During the I World War, she managed a hospital center destined to receive blood donations for the wounded soldiers. Since 1931 she led the Traditionalist Party when her husband became the Carlist pretender to the Spanish throne until he died in 1936.

Fue una figura determinante para la historia del carlismo, tanto en los campos de batalla como en el exilio. Mujer culta, políglota, ha dejado minuciosamente documentados los grandes acontecimientos de una Europa cambiante, vividos en primera persona en su exilio austriaco, a través de sus diarios, recortes de prensa y memorias. En sus viajes alrededor del mundo, iniciados en 1868, nunca olvidó un cuaderno donde apuntar sus observaciones.