It is neither a trilogy, which refers to three dramatic works, nor a Trinity, since, capitalised, it refers to the Christian triune God. Thus, I wrote trinity, and trinity it will remain.
St Patrick's Catholic Church is not particularly noteworthy for historical or other reasons. There is a street named St Patrick at some distance to the west of the station. This does not help people get around. The station was named to honour the Irish, and likely in the case of Toronto, once well known for its connexions to the Loyal Orange Lodge, specifically for the Protestant Northern Irish.
St Andrew's Presbyterian does have the stronger claim for historical significance. But there is not even a street named after it in the vacinity of the station.
And since when do people get their bearings in downtown Toronto based on the location of Osgoode Hall?
In any case, my argument stands that there are precedents in the heart of Toronto for naming subway stations for other than geographical reasons. To object that a subway stop cannot be named Jubilee Station would either based on ignorance or republican sentiment.