The first written references about Coomonte are dated about the Late Middle Ages.[3] They refer to the Church of San Juan (Saint John Baptist), their priests and donations made to the monastery of San Esteban de Nogales. During the 14th and 15th centuries there were several documents naming the council ("concejo") of Coomonte.[3] Most of the documents of the Middle Ages and the Renaissence that contains the name of the town are court orders ("ejecutorias").[4]
During the early 16th century, the council of Coomonte hired the dutch painter Juan de Holanda to make the altar of the church.[4] During that century soldiers of Coomonte took part in the wars of the King of Spains, for example in 1580, enlisting them to the war of Philip II to the annexation of Portugual to the Spanish Crown.[3]
During the 17th century, is known thar the flood of the Órbigo river caused catastrophic events and the population decresed.[3] Along this century, also are frequent the documentation about court orders and census.
In the 18th century the historic information is higher in part because the Catastro of Ensenada give us many data about economic life and professions in the town. Including the reference to the traditional wineries owned to domestic use by the families.[5]