Synonym (also João de Santarém Tinto, João Santarém) for the grape variety Castelão Francês; see there.
The red grape variety originates from Portugal. Synonyms are Bastardo Castico, Bastardo Espanhol, Catelão, Castelão, Castelão Real, Castellam, Castellao Portugues, Castico, João de Periquita, João de Santarém, João de Santarém Tinto, João Santarém, Lariao Preto, Mortágua, Mortágua de Vide Branca, Olho de Lebre, Perikvita, Periquita, Piriquita, Piriquito, Pirriquita and Trincadeira. The variety was first mentioned in 1531 by the ampelographer Rui Fernandes under the obviously misspelled name Catelão. José Maria da Fonseca, who founded a vineyard in Azeitão south of Lisbon in 1834 and introduced the variety here, played a key role in its spread. The first vines were planted on a vineyard called "Periquita". The wine was so successful that...
For me, Lexicon from wein.plus is the most comprehensive and best source of information about wine currently available.
Egon Mark
Diplom-Sommelier, Weinakademiker und Weinberater, Volders (Österreich)