The Mission work was actually launched by the PIME missionaries much before 1885 when this area was under the Hyderabad vicariate.

The oldest Catholic Community brought to faith by Fr.F.Rolla PIME to Bayyaram village in 1901 still remains as a historical monument.

Vigano's Pastoral visits to different places could also bring some impact to the Christian communities.

Because of their strenuous efforts, we could now have the pride of having Bayyaram parish(https://www.google.co.in/maps/place/Varadha+Matha+Shrine/@16.9434417,80.3356759,15z/data=!4m5!3m4!1s0x0:0xe06fc17ee2443899!8m2!3d16.9434417!4d80.3356759?sa=X&ved=0ahUKEwijyO-H-PPaAhXLQ48KHR40DlUQ_BIIeDAO) because the first one to yield the first vocation in the diocese and later five more.

On 8 January 1953, under the dynamic leadership and great vision of Bishop A. Beretta, the Catholic Church in Khammam penetrated into interior places.

Bishop Beretta set up many schools, dispensaries, boardings and launched other socio-economic developmental schemes.