Edvard Larsson Rondberg was born 2 December 1889 in Lysvik, Värmlands County, Sweden, to Lars, a crofter b. 17 August 1858 in Lysvik, and Maria (nee Nilsdotter; b. 18 November 1862 at Lysvik) Persson. His parents had married 25 March 1881. His known brothers and sisters were Emma Teresia, b. 13 July 1881, Nils Johan, b. 7 July 1884, Erik Viktor, b. 12 January 1887, and Anna Regina, b. 16 July 1893, Berta Albertina, b. 16 March 1896, Lars Arvid, b. 14 March 1898, Otto Helmer, b. 1 November 1900, and Signe Maria, b. 30 July 1902. The family later went by the name Ramberg.
Edvard Larsson, who seems to have called himself Rondberg rather than Ramberg, had gone to North America 11 August 1908 had lived at 533 East Trent Street, Missoula, Montana where he worked as a cook. He appears on the 1910 census in that city and lived at 533 East Rent Street. His brother Nils lived in Beaver, Montana and in America they both went by the name of Rondberg.
He returned to Sweden to fetch his fiancée, Berta Olivia Nilsson 1 and they were returning to Missoula from Lysvik. They boarded the Titanic at Southampton on 10 April 1912 as third class passengers, Edvard on ticket number 347065 which cost £7m 15s, 6d.
Edvard Larsson died in the sinking and his body, if recovered, was never identified. Berta Nilsson was among the rescued.
The Mansion House Fund paid 874.08 Kr (£48) to his parents and a claim for damages of 1366.50 Kr (£75) was paid 31 May 1914.
Missoula, April 20. - Somewhere among the distracted survivors of the Titanic wreck in New York is a little 18 year-old Swedish girl, Bertha Nelson, who is bound for Missoula to join her sister, Mary Nelson, a maid at the Tyler B. Thompson residence, 523 East Front street. At the bottom of the Atlantic lies the body of Bertha's betrothed, a Missoula boy, Edward Rondberg, brother of Nels Rondberg of Beaver, Mont. Edward Rondberg was well known in Missoula where he worked for several years. He was a cook at the Atlantic restaurant and last fall he had saved money enough to go back to Sweden, and was bringing Bertha, his childhood companion and sweetheart, back to Missoula, where they had intended to marry. - Great Falls Tribune (Montana), 21 April 1912, p. 2