 In the new division of Pontevedra municipalities, in accordance with Royal Decree of 23 June 1835, it was included in the parish of Mondariz as a mere territory, and as reflected in his writings Florida Blanca, it was under the jurisdiction of Sobrosa, being dependent of Don Juan Lago, the Marquis de Valladares and the Marquis de Sobrosa.In 1904 the parish becomes Troncoso, a newly created parish whose territories were dispersed from the parish of Santa Eulalia de Mondariz dependent of Mondariz parish.In 1924, after the change of name to the parish of Our Lady of Lourdes it becomes an independent municipality on November 30 with the current name Mondariz-Balneario.