@celesteh I'm also not sure about the relationship between the crucifixion and Dionysus: he was related with trees, but that feels a bit of a stretch.
As for being related to wine, he was indeed the one who discovered it, but that part would have more parallels with Noah rather than Jesus, and those stories may have influenced each other, or they may have developed independently.
As for the trinity, I see on wikipedia (en.wikipedia.org/wiki/Aventine…) that the term is a modern one; of course it's a parallel with other triads, known in Antiquity, that involved different gods. But the concept of a Triad is quite different from that of the Trinity: the former is made of three quite distinct gods, while the latter is very much “it's complicated”. The concept of the Trinity did however develop in an Hellenistic culture, and may have been influenced by the importance of the number three in that tradition.