Joanna of Austria, Princess of Portugal
She served as regent of Spain for her brother Philip II during his trips to England to marry Mary I from 1554 to 1556, and 1556 to 1559.Later that year Joanna returned to Spain at her father's request, leaving her young son in the care of her mother-in-law, who was also her aunt.The marriage was cut short when John Manuel died of tuberculosis at age sixteen on 2 January 1554.Joanna returned to Spain in May 1554 at the request of her father, leaving her newborn son with her mother-in-law, the Portuguese Queen Catherine of Austria, who was Charles V's youngest sister.Shortly after Sebastian's birth, Joanna was called back to Madrid by her brother Philip to act as regent during his absence in England from 1554.
Joanna of CastileJoanna of Austria, Marchioness of MilitelloJoanna of Austria, Grand Duchess of TuscanyPrincess of PortugalAlonso Sánchez CoelloMadridCrown of CastileEl EscorialConvent of Las Descalzas RealesJohn Manuel, Prince of PortugalSebastian of PortugalHabsburgCharles V, Holy Roman EmperorIsabella of PortugalJoão Manuel, Prince of PortugalPhilip IIEnglandMary ICristóvão de MoraisKing of AragonKing of CastilePhilip of CastileManuel I of PortugalMaria of AragonPhilip II of SpainMaria of AustriaArchduchess of AustriaInfantaprincess of BurgundyNativity of St. John the BaptistQueen Joanna of CastileLeonor de MascareñasJohn Manuel of PortugaltuberculosisSebastián IJacopo da TrezzoCatherine of AustriaPoor ClaresDiscalcedJesuitsIgnatius of LoyolaFrancis BorgiaAlcalá de HenaresMaximilian I, Holy Roman EmperorPhilip I of CastileMary, Duchess of BurgundyFerdinand II of AragonJoanna I of CastileIsabella I of CastileFerdinand, Duke of ViseuBeatrice of PortugalChisholm, HughEncyclopædia BritannicaWurzbach, Constantin vonBiographisches Lexikon des Kaiserthums OesterreichWikisourceInfantas of SpainCarlos IMaría, Holy Roman EmpressIsabel Clara Eugenia, Duchess of BrabantCatalina Micaela, Duchess of SavoyAna, Queen of FranceInfanta MaríaMaría Ana, Holy Roman EmpressInfanta MargaritaMaría Teresa, Queen of FranceMargarita Teresa, Holy Roman EmpressMariana Victoria, Queen of PortugalMaría Teresa Rafaela, Dauphine of FranceMaría Antonia Fernanda, Queen of SardiniaInfanta María JosefaMaría Luisa, Holy Roman EmpressIsabella, Archduchess Joseph of AustriaCarlota Joaquina, Queen of PortugalMaría Amalia, Infanta Antonio Pascual of SpainMaría Luisa, Queen of Etruria and Duchess of LuccaMaría Isabel, Queen of the Two SiciliesQueen Isabel IIInfanta Luisa Fernanda, Duchess of MontpensierIsabel Fernanda, Countess Ignaz GurowskiInfanta Luisa Teresa, Duchess of SessaInfanta Josefa Fernanda, Mrs. José GuëllMaría Cristina, Infanta Sebastian of Portugal and SpainAmalia, Princess Adalbert of BavariaMaría Luisa Carlota, Hereditary Princess of SaxonyInfanta Isabel, Countess of GirgentiInfanta María del PilarMaría de la Paz, Princess Ludwig Ferdinand of BavariaInfanta Eulalia, Duchess of GallieraInfanta María Isabel, Countess of ParisInfanta Maria AmeliaInfanta María CristinaMaria de las Mercedes, Queen of SpainMaria de las Mercedes, Princess of Asturias and Princess Carlos of Bourbon-Two-SiciliesMaría Teresa, Princess Ferdinand of BavariaInfanta Beatriz, Princess of Citivella-CesiInfanta María Cristina, Countess MaroneIsabel Alfonsa, Countess Jan Kanty ZamoyskiMaria de las Mercedes, Princess Irakli Bagration of MukhraniInfanta Pilar, Duchess of Badajoz and Viscountess of La TorreInfanta Margarita, Duchess of Soria and HernaniInfanta Elena, Duchess of LugoInfanta CristinaLeonor, Princess of AsturiasInfanta SofíaFrederick III, Holy Roman EmperorKunigunde, Duchess of BavariaMargaret, Duchess of SavoyEleanor, Queen of Portugal and FranceIsabella, Queen of Denmark and NorwayMaria, Queen of Hungary and BohemiaCatherine, Queen of PortugalMaria, Holy Roman EmpressElisabeth, Queen of PolandAnna, Duchess of BavariaMaria, Duchess of Jülich-Cleves-BergMagdalenaCatherine, Queen of PolandEleanor, Duchess of MantuaMargaretBarbara, Duchess of FerraraHelenaJoanna, Grand Duchess of TuscanyIsabella Clara Eugenia, Co-sovereign of the Habsburg NetherlandsAnna, Queen of SpainElisabeth, Queen of France