Immaculate Conception Parish - designated for Polish immigrants in Southington, Connecticut, United States.

In 1906, a committee of the society asked Bishop Michael Tierney for a Polish priest.

A new Polish Catholic parish was officially approved in September 1915 by Bishop John Joseph Nilan.

Woroniecki celebrated the first parish Mass at a hall belonging to the Polish Falcons.

On July 9, 1916, Bishop John Joseph Nilan dedicated the basement church of Immaculate Conception Parish.