According to Giuseppe Alberigo, Church History lacks of an interest in Christian experiences within local communities. Hence, there is a considerable demand for a focuses on concrete Christian communities were lively experiences of faith were unfolded. Such a kind of Church History has to concentrate on the principle of "communio" between local churches, that is, on the dynamics of working together and the ideal of mutual support among communities members. Corresponding to this approach the article sketches the research on Brazilian ecclesial communities located in the south of the State of Maranhão and associated with the local church of Balsas which have already been working together for more than fifth years.