Is it acceptable to pray to the deceased - ones not canonized? Say you knew someone, Gramma or Granpa or ? that you thought were pretty holy. Could you pray to them as if they were saints?
On the one hand I think there’s no harm. Nowhere does the Church insist that only those canonized are the ones who “made it”. And the feast of “All Saints” implies that there are other saints not named in the Canon.
But on the other hand, if they were in Hell, could this be opening the door to Satan? I mean, there are demons that go by names, and invoking the name of a demon could be dangerous. So if your grandpa really ended up in Hell, could praying to him be dangerous?