To explain how the Grail made its way from Jerusalem to Valencia, Verdeguer refers to the Christian belief that the Last Supper took place in the house of St Mark, a disciple of St Peter. He posits that when St Mark had to flee Jerusalem in 70 CE due to the Roman invasion, he took the valuable cup with him. From there, St Mark settled in Rome where the cup was passed on to various Popes and eventually to St Lawrence, who sent it to Spain for safekeeping from further wars. Eventually, it ended up in Valencia, the capital of the Kingdom of Aragon in the 1400s.