Mr Ernst Adolf Sjöstedt was born 9 September 1852 in Hjo, Västergötland, Sweden.
His parents were Anders Gustav, a merchant born 10 December 1822 at Skara, Sweden, and Emma Gustava (nee Forssell; born 28 June 1829 at Hjo) Sjöstedt. His parents had married 8 November 1846. His brothers and sisters were Gustaf Robert, b. 20 September 1848, Emma Mathilda, b. 26 November 1850, Maria Louise, b. 19 May 1854, Anna Katarina, b. 23 June 1856, Gustaf Bernard, b. 24 April 1858, Karl Mathias, b. 3 February 1860, Ellen Gustafva, b. 23 January 1862, Sten Fredrik Emanuel, 6 September 1864, and Bror Yngve, b. 3 August 1866; all born at Hjo.
Sjöstedt apprenticed at the Creusot (Creuset?) Iron Works in France, then studied at Bergsskolan in Stockholm, graduating in 1876.
He moved to the United States in 1878 or 1880 to work at Bethlehem Steel in Pennsylvania.
Amonghis inventions were the Sjöstedt sulphur roaster and the Sjöstedt electric smelting furnace.
His wife was Jessie Kathleen Winslow (b. October 1864 in New Brunswick).
They had married (sometime before 11 September 1882) in Nova Scotia and they had at least one daughter, Mary Tekla Dorotea Mathilda, who had been born 6 February 1893, but had died in infancy. There were rumours about two additional daughters, but they have not been traced. The Sjöstedts belonged to the Lutheran faith.
He moved to Canada in 1890 to join the Nova Scotia Steel Company in Bridgeville, Nova Scotia, and in 1899 was appointed chief metallurgist for The Consolidated Lake Superior Copper Co. in Sault Ste. Marie, Ontario. The family he lived at 1077 Queen Street East, Sault Ste. Marie, Ontario.
In 1911, the family, were listed as living in Algoma, Ontario.
In April 1912 Sjöstedt was returning to Sault Ste. Marie having been in Sweden on commission from the Canadian governmental mining department to study methods to extract copper-sulphite ore and electric iron melting.
He travelled from Gothenburg and boarded the Titanic at Southampton as a second class passenger (ticket number 237442, £13 10s). His report was lost with him. His body, if recovered, was never identified.
Mrs. Sjöstedt died in Ottawa on 13 August, 1953.
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