Fray Matías Ruiz (fl.
1665-1702) was a Spanish baroque composer.
He was probably the one same Matías Ruiz who was maestro de capilla at León Cathedral in 1665, and then at the Encarnación 1676-1678, and who, still referred to as maestro at the Convent of the Incarnation, Madrid though he no longer could have been, published music for Easter in 1702.
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