When Henry died, a succession crisis occurred and António, Prior of Crato, was proclaimed António of Portugal. The House of Habsburg, known as the Philippine Dynasty, is the house that ruled Portugal from 1581 to 1640. The dynasty began with the acclamation of Philip II of Spain as Philip I of Portugal in 1580, officially recognized in 1581 by the Portuguese Cortes of Tomar. Philip I swore to rule Portugal as a kingdom separate from his Spanish domains, under the personal union known as the Iberian Union. The House of Braganza, also known as the Brigantine Dynasty, came to power in 1640, when John II, Duke of Braganza, claimed to be the rightful heir of the defunct House of Aviz, as he was the great great grandson of King Manuel I. John was proclaimed King John IV, and he deposed the House of Habsburg in the Portuguese Restoration War. The descendants of Queen Maria II and her consort, King Ferdinand II (a German prince of the House of Saxe-Coburg and Gotha), came to rule in 1853. Portuguese law and custom treated them as members of the House of Braganza, though they were still Saxe-Coburg and Gotha dynasts. This has led some to classify these last four monarchs of Portugal as members of a new royal family, called the House of Braganza-Saxe-Coburg and Gotha, though this view is not widely held.