What is the rule on naming churches? Obviously they can be named after (put under the patronage of) beati, canonized saints (including Mary), and God, including incidents in Christ’s life. There are churches named for The Blessed Trinity, and for Jesus, or the Holy Spirit, but I have never heard of one named specifically after God the Father. Why not?
If naming a church means putting it under their patronage, that would seem to rule out living persons, or those who are considered “only” Venerable at this time, or deceased persons not yet identified as Venerable.
I would guess that the rules for naming parishes, and dioceses, are stricter, since you are also choosing a patron. There are chapels, shrines, etc that might not be under the same rules, if they do not necessarily have a patron if they are not a parish.