Isabel Luísa, Princess of Beira

Infanta Isabel Luísa of Portugal (Isabel Luísa Josefa; 6 January 1669 – 21 October 1690) was a Portuguese infanta and the sole daughter of Peter II of Portugal and his first wife and former sister-in-law Maria Francisca of Savoy. She was the heir presumptive to the throne of Portugal between 1668 and 1689, when her half-brother John was born. As such, she was styled Princess of Beira.

Titles and styles

 * 6 January 1669 — 22 October 1690 Her Royal Highness The Princess of Beira, Infanta of Portugal.