Since there are MANY churches with the word Trinity in their names, there is no way to answer this question unless you tell us which particular one you're asking about. But it isn't a regional religion! And most likely it's Christianity, since the Trinity is a Christian doctrine.
It is an Episcopal church.
The church that does not believe in the doctrine of the Trinity is the Unitarian Universalist Church.
Cardinal Newman
Trinity Church - Antarctica - was created in 2004.
Old Trinity Church was created in 1711.
Trinity Church Lansingburgh was created in 1807.
Trinity Church - Manhattan - was created in 1698.
Trinity Evangelical Church was created in 1929.
Trinity A.M.E. Church was created in 1909.
Holy Trinity Church Marylebone was created in 1828.
Trinity Church can be located in Manhattan. It is at the intersection of Wall Street and Broadway, in New York. The Trinity Church's exact address is 74 Trinity Place, New York.
God is the Supreme Being in the Catholic Church who is present in the Trinity- Father, Son and Holy Spirit.