Trident of Poseidon Stainless Steel Petrine Cross Ring* Note: For back order items, please allow 20 working days of crafting time. The Cross of Saint Peter or Petrine Cross is an inverted Latin cross. In Christianity, it is associated with the martyrdom of Saint Peter. Poseidon, also known as Neptune, was the son of Cronus and Rhea, the brother of Zeus, who was in charge of the ocean. He was god of the sea, storms, earthquakes and horses in ancient Greek mythology. Poseidon held a trident, which became