page_title: 1503
section_title: Births
hierarchical_section_title: 1503 / Births
caption_attribution_description: Español: Retrato de la emperatriz Isabel de Portugal (1503-1539), que fue hija del rey Manuel I de Portugal y de la reina María de Aragón y esposa del emperador Carlos I de España, siendo además la madre del rey Felipe II.English: Titian, Empress Isabel of Portugal, 1548, oil on canvas, 117 x 98 cm, Prado museum (Madrid, Spain)
context_page_description: Year 1503 was a common year starting on Sunday of the Julian calendar.
context_section_description: January 3 – Al-Mutahhar, Imam of the Zaidi state of Yemen (d. 1572)
  January 11 – Parmigianino (Girolamo Francesco Maria Mazzola), Italian artist (d. 1540)
  January 18 – Joachim of Münsterberg-Oels, Duke of Münsterberg, Duke of Oels, Count of Kladsko, Bishop of Brandenburg (d. 1562)
  February 24 – Johann Gropper, German Catholic cardinal (d. 1559)
  March 4 – Elisabeth of Hesse, Countess Palatine of Zweibrücken, later Countess Palatine of Simmern (d. 1563)
  March 10 – Ferdinand I, Holy Roman Emperor (d. 1564)
  March 11 – George Harper, English politician (d. 1558)
  March 22 – Antonio Francesco Grazzini, Italian writer (d. 1584)
  April 6 – Jacob Micyllus, German humanist (d. 1558)
  April 18 – Henry II of Navarre, King of Navarre (1517–1555) (d. 1555)
  May 1 – Celio Secondo Curione, Italian humanist (d. 1569)
  June 1 – Wilhelm von Grumbach, German adventurer (d. 1567)
  June 28 – Giovanni della Casa, Italian poet (d. 1556)
  June 30 – John Frederick I, Elector of Saxony (d. 1554)
  July 23 – Anne of Bohemia and Hungary, Queen consort of the Romans, Bohemia and Hungary (d. 1547)
  August 12 – Christian III of Denmark and Norway (d. 1559)
  October 4 – Isabella of Portugal, Queen of Spain (d. 1539)
  November 12 – Philip, Duke of Palatinate-Neuburg, German duke (d. 1548)
  November 13 – Ippolita Gonzaga, Italian nun (d. 1570)
  November 17 – Agnolo di Cosimo, Italian artist and poet (d. 1572)
  November 19 – Pier Luigi Farnese, Duke of Parma (d. 1547)
  December 14 – Michel de Nostredame, called Nostradamus, French physician and writer of Les Propheties (1555) (d. 1566)
  December 20 – Cosimo Bartoli, Italian diplomat and writer (d. 1572)
  date unknown
  Lucas David, Prussian historian (d. 1583)
  Robert Estienne, French printer (d. 1559)
  John Frith, English Protestant priest and martyr (d. 1533)
  Susannah Hornebolt, English artist (d. c. 1554)
  Lakandula, Lakan of Tondo (d. 1589)
  Shimazu Katsuhisa, Japanese nobleman (d. 1573)
  Tomé de Sousa, Portuguese nobleman, first general-governor of Brazil (d.1573 or 1579)
  probable – Nicholas Bourbon, French poet
caption: Queen Isabella of Portugal
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