Yes, here's a bit more info on the Captain. According to the register he was of the ship Marks and died in the North Sea.
I guess it must be a transcription error because the Shields Gazette of 13 April states that the German galeat Marx of Amcrum arrived in Amble to report the death of their captain. The vessel was about 30 to 40 miles off Amble and the master Mr Johannes Matzen fell backwards into his cabin as he was coming up onto deck. He was found to be dead. Apparently he was a well known figure in Amble as he had loaded from the port for about 20 years. He belonged to Amcrum, a small island off the coast of Germany.
The Shields Gazette does seem to be a great source of information on Amble
