Isidore the Laborer, born Isidro de Merlo y Quintana, also known as Isidore the Farmer, was a Mozarab farmworker who lived in medieval Madrid. Known for his piety toward the poor and animals, he is venerated as a Catholic patron saint of farmers, and of Madrid; El Gobernador, Jalisco; Condiro Jalisco, La Ceiba, Honduras; and of Tocoa, Honduras. His feast day is celebrated on 15 May.