Miguel da Paz, Prince of Asturias

The Infante Miguel da Paz, Prince of Portugal and Prince of Asturias (Portuguese: "Miguel da Paz de Trastâmara e Avis"; Spanish: "Miguel de la Paz de Avís y Trastámara") (1498–1500, pron. IPA2|mi'gɛɫ dɐ paʃ; English (lit.): "Michael of the Peace") was a Portuguese royal infante, son of King Manuel I of Portugal and his first wife Isabella of Asturias (1470-98). He was recognised as heir to both his father's kingdom of Portugal, and to his grandparents' kingdoms of Castile and León. As such, he was styled both Prince of Portugal and Prince of Asturias.

He was born in Zaragoza, Spain on August 24, 1498 and his mother died during childbirth. For the next two years he was the heir to the throne of both Portugal and Spain.

One of Miguel's maternal aunts, Maria of Aragon, then married his father and gave birth to eight children.

He died young in Granada on July 19, 1500 and is buried in the Convent of Saint Isabella, the Royal, in Toledo.

Hopes to unite all Iberian kingdoms vanished at Miguel's death. After his demise, Juana "la loca" (Joan the Mad, Miguel's maternal aunt) became the heiress of Spain, eventually bringing those kingdoms to the Habsburgs. However, the Iberian Union, although short-lived took place about a hundred years later, in 1580 until 1640, when the Habsburg king, Philip II of Spain, Miguel's half-nephew, and grandson of both Juana and Manuel of Portugal, acquired Portugal and its dominions (see Philippine Dynasty).