Mr Charles Valdemar Jensen was born in København (Copenhagen), Denmark on 27 December 1887 and later baptised on 22 April 1888 in St Johanne's church.
Jensen was the son of Kristian Jensen (b. 1 June 1845) and Maren Jensine Christine Michelsen (b. 27 October 1855) who were married in 1874.
He had nine known siblings, several who did not survive past childhood: Karl Kristian (b. 22 January 1876), Fanny Theodora (b. 22 October 1879), Fanny Margrethe (b. 5 January 1882), Dagmar Eugenie Harriett (b. 24 August 1883), Nelly Alexandra Eleonora (b. 13 August 1885), Peter Thorvald (b. 12 August 1886), Dagmar Harriett (b. 21 June 1889), Ingeborg Louise (b. 27 April 1891) and Clara Adolfina (b. 29 October 1899).
He first appears on the 1890 census living in Sølvgade in central Copenhagen. By 1901 the family were living at Classengrade, Copenhagen. He and his widowed mother, including a lodger, were living at Nørregade, Copenhagen by the time of the 1906 register and he was described as an operator (?). By 1911 his mother was living at Mikkel Bryggers Gade, Copenhagen but Charles was not listed at the time.
When he signed-on to the Titanic on 4 April 1912 Jensen gave his address as 17 Morris Road in Southampton. His previous ship had been the Atrato and as a saloon steward he received monthly wages of £3, 15s. He was the only crew member from Scandinavia.
Charles Jensen died in the sinking and his body, if recovered, was never identified.
He left behind his widowed mother Maren Jenseine Christine Jensen, a sister and two brothers. The Mansion House Fund paid £20 and later £60 to his mother and she later received a further £80 in compensation. She continued to live in Copenhagen but her eventual fate remains uncertain.