The donation of the church of San Miguel Historical milestone · Trefacio, Sanabria, Zamora Image of Trefacio, not of the place itself. Godina Vermúdez handed over in 1162 the church of San Miguel to the monastery of San Martín de Castañeda, with the approval of the residents gathered in open council; already in 1103 the monastery had received property here. 1162 Photo: M.Peinado from Alcalá de Henares, España (CC BY 2.0) What to see and do in Trefacio