Here’s a riff on that theme …
Many feasts of the Lord lend their names to parishes: Nativity, Transfiguration, Sacred Heart, Corpus Christi, Christ the King, etc.. Have you ever wondered by some feasts do not inspire such patronage? Baptism of the Lord strikes me as one of these.
The celebration of the Baptism of the Lord has been given a place of honor through the reform of the General Roman Calendar, which has assigned it to the Sunday after Epiphany. This is meant to facilitate observance of the feast by the whole Christian community gathered together on that Sunday, since in the history of salvation and in the liturgical year this feast has highly important doctrinal, pastoral, and ecumenical dimensions.
If this is true, I would expect more parishes dedicated to the Baptism of the Lord.