The Shannon Pot in Co. Cavan is said to be the traditional source of the River Shannon, although the Shannon is now known to have come from several sources. The Shannon is named after Sionnan, who was the granddaughter of Manannan Mac Lir, or God of the Sea. She came to this spot to eat the fruit of the forbidden, or the Tree of Knowledge, which was planted by the Druids. As she began to eat it, the waters of the pool sprang up and overwhelmed her, drawing her down into it to flow out later across the land, thus the River Shannon sprung up.
