San Isidro, Departamento Federal, Entre Ríos Province

Includes the following communities: 
Aldea San Isidro
San Isidro
History: 

Colonia San Isidro was officially founded 12 February 1923 by 78 Volga German families. The land area assigned for San Isidro was 10,800 hectars designated for agricultural use.

Volga German Congregations: 

The church in San Isador is called San Isador Labrador.

Volga German Families: 

The following Volga German families are known to have settled in San Isidro:

Böhm
Dening
Gerstner
Grenz
Regner
Rothamel
Schön

Sources: 

- Erk, Albert A. Gründung der Deutschrussenkolonie San Isidro (Entre Rios) und ihre Entwicklung im ersten Jarhe Buenos Aires: Mercur, 1924. (online)

Map of San Isidro.
Source: Albert Erk

San Isador Labrador Church.
Source: www.heraldicaargentina.com.ar

Farm of the Schön Family near San Isidro.
Source: Albert Erk

Pre-Volga Origin