Álvaro Gonçalves Pereira (European Portuguese: [ˈalvɐɾu ɣõˈsalvɨʃ pɨˈɾɐjɾɐ]), Prior of Crato, was born to Gonçalo (Gonçalves) Pereira, 97th Archbishop of Braga (1326-1349) and Teresa Peres Vilarinho.

There he founded the Castle of Amieira, the palaces of Bonjardim and the Monastery of Flor da Rosa, near Crato, the seat of the Order in Portugal.

He administered the Order with great zeal and won a brilliant victory at Salado.

He was one of the eminent figures of the reigns of Kings Afonso IV, Peter I and Ferdinand I.

Marriage was prohibited by his order, but he had 32 children, including: Pedro Álvares Pereira, Prior of Crato and Master of Calatrava who died at the Battle of Aljubarrota fighting for King John I of Castile in 1385; Nuno Álvares Pereira; Rodrigo Álvares Pereira, legitimized by King Peter I of Portugal and one of the most respected noblemen under Portuguese Kings Peter I, Ferdinand I and John I; Violante Alvares Pereira, noblewoman and wife of Martim Goncalves de Lacerda, a Castilian Knight in service to King John I of Portugal; and Diogo Álvares Pereira, Prior of the Order of St. John