1195 – May 1, 1256 in Rio Tinto, Gondomar; Portuguese pronunciation: [m?'fa?d?]) was a Portuguese infanta (princess), later Queen consort of Castile for a brief period.
She was the second youngest daughter of King Sancho I of Portugal and Dulce of Aragon.
Married briefly to the ten-year-old Henry I of Castile, she held for a time the title Queen of Castile.
Upon the dissolution of the marriage, she retired to religious life.