Searching for King John's treasure

It is quite possible that this man is searching for a particular treasure hoard although he is a few miles away from the most likely spots. King John is reputed to have lost the Crown jewels crossing the Wash. According to contemporary reports, King John travelled from Spalding in Lincolnshire to Bishop's Lynn, in Norfolk, was taken ill and decided to return. While he took the longer route by way of Wisbech, he sent his baggage train, including his crown jewels, along the causeway and ford across the mouth of the Wellstream. This route was usable only at low tide. The horse-drawn wagons moved too slowly for the incoming tide, and many were lost. The location of the accident is usually supposed to be somewhere near Sutton Bridge, on the River Nene. The name of the river changed as a result of redirection of the Great Ouse during the 17th century, and Bishop's Lynn became King's Lynn as a result of King Henry VIII's rearrangement of the English Church. Astronomical study, however, permits a reconstruction of the tide table for the relevant day and it seems most likely, given travel in the usual daylight hours, that the loss would have been incurred in crossing the Welland Estuary at Fosdyke. There is also a suspicion that John left his jewels in Lynn as security for a loan and arranged for their "loss". This looks likely to be apocryphal. However that may be, he stayed the following night, of 12 to 13 October 1216, at Swineshead Abbey, moved on to Newark-on-Trent and died of his illness on 19 October.