Rosenda Monteros, prominent Mexican actress.
She was perhaps most famous in the US as Petra, Chico’s romantic interest in the 1960 version of “The Magnificent Seven”.
Interesting side note from the obit:
“The Magnificent Seven” was shot in Mexico, where a government censor kept a close eye on the production to make sure that Mexicans were depicted positively. Mr. Sturges told The New York Times in 1960 that the censor was “an autocrat” who operated “on the theory that anything debatable should be stricken out.”
Mr. Sturges took note of one major change to the script: Instead of setting out to hire American fighters from the start, the farmers at first tried to buy guns for themselves.