This composer does not have an entry in the Diccionario de la música española e hispanoamericana. According to a villancico printed in 1757 preserved at Jaca Cathedral, Francisco Salas was a "racionero", chapelmaster and organist at the Cathedral of Huesca in1756. An organist named also Francisco Salas was active at El Pilar, Zaragoza, in 1719, but it is difficult to know if they were the same person. Both pieces of information are found in an old card catalogue of musicians at the Institución Milá y Fontanals, CSIC, Barcelona.