Francisco de Vergara explained

Francisco de Vergara (died 1545 in Toledo, Spain) was a Spanish Hellenist and humanist, brother of Juan de Vergara. He was chair of Greek at the Trilingual College of the University of Alcala. The brothers were of Jewish descent on their maternal side. Francisco de Vergara's students included Juan de Valdés.^[1]

Notes and References

1. Twilight of the Renaissance: the life of Juan de Valdés Page 33 Daniel A. Crews - 2008 "He was a good friend with many of the university's luminaries, including its rector, its printer, the primary chair of Greek, Francisco de Vergara, and his brother Juan de Vergara, who had helped to edit the Polyglot Bible."