Short answers, pulled from the story.
John the Apostle was the younger son of Zebedee and Salome, born into a family of Jewish fishermen on the Sea of Galilee. He was the brother of James the Great and one of the first disciples called by Jesus.
John the Apostle died of natural causes at Ephesus sometime after AD 98 during the reign of Trajan. His tomb is thought to be located in the former Basilica of St. John at Selçuk, though his body was never found.
Roman authorities banished John the Apostle to the Greek island of Patmos during the persecutions under Emperor Domitian. He wrote the Book of Revelation while on the island for the word of God and for the testimony of Jesus Christ.
The chalice with a serpent emerging from it symbolizes a legend from the Acts of John in which John was challenged to drink a cup of poison to demonstrate the power of his faith. This event is said to have occurred in Rome before his exile to Patmos.
John the Apostle is traditionally believed to be the only apostle who did not die as a martyr but died of natural causes at Ephesus. He is also the only apostle to leave no bodily relics, leading to the belief that his body was assumed into heaven.