Jacob, the Diver
The Dutch marine diver, John Jacop Janson, (in English Jacob Johnson) was hired in 1620 to recover guns from a shipwreck near Waterford. He was later hired to recover guns and valuable cargo from ships wrecked in the Downs, near Dover, at the Needles and in Southern Ireland. In 1629 he had a warrant to recover bullion, ordnance, and valuables from wrecks off Ireland and the English south coast. His name is connected with Armada wrecks off Ireland. Correspondence between shipowners, agents, the Admiralty, and other authorities on contracts, ownership of salvaged goods, their disposal, local interference, etc is covered.