History
In 1901 and 1902, worship services in La Llave were held in the home of the Horst family, and the pastors from Aldea Protestante came to conduct the services. From 1903 to 1905 the congregation was served by Pastor Matthesius of Urdinarrain.
The congregation began construction of a church building in 1907, which was completed in 1909. The parish is affiliatedwith the Iglesia Evangélica del Río de La Plata (IERP).
Sources
Elena Vega Stehle