Demetrio Quirós Weyler was a Spanish military officer notable for his service during the Ten Years' War in Cuba, where he later served as the governor of Matanzas.

[1] Demetrio Quirós Weyler graduated from the Infantry School of Toledo in the mid-1850s after deciding to join the Spanish Army.

On October 25, 1868, he was involved in the Battle of Pino de Baire in the eastern province of Oriente.

[6] In the face of mounting challenges, Quirós was eventually compelled to retreat to Santiago de Cuba, where he regrouped.

[8] On May 5, 1873, he was appointed Military Governor of Matanzas in Cuba, succeeding Juan Nepomuceno Burriel.