I have a newspaper article featuring Karen Birgitte Nielsen, Johann's mother and telling the story of his father, Anton Martin Teodor Larsen DOB 1845 in Hovik Verk, Norway, sailing competition accident/death in Oslo Fjord on September 7, 1895. My grandfather had a brother, Karl Larsen, who was a physician in Solvik, Norway and a sister, Marie Larsen Ruud, whom I met several times in San Diego, CA as a child on her visits from Norway.