Anyone with an interest in the Loch Ness Monster will tell you that the earliest account of the monster was by Saint Columba sometime in the 6th century AD. The story itself has been repeated countless times in books, magazine and newspaper articles since the early days of Nessie fever in 1933. Even the latest Nessie story can’t help but stretch back nearly 14 centuries to make a mention of it.

via LOCH NESS MONSTER: The World’s Oldest Loch Ness Monster Document.