Mrs Lars Johan Karlsson Ahlin was born as Johanna Persdotter on 21 June 1871 in Västermo, Södermanland, Sweden.
She was the daughter of Per Larsson, a farmer, and Anna Stina Larsdotter (b. 1842) and had nine siblings: Anna (b. 1869), Emma Sofia (b. 1873), Carl Oscar (b. 1875), Augusta (b. 1877), Charlotta (b. 1879), Emma Christina (b. 1883), Olof Arvid (b. 1884), Johan Emil (b. 1886) and Hulda Maria (b. 1889).
She was married to Lars Johan Karlsson Ahlin (b. 13 August 1870 1), a native of Öja, Södermanland and they had four children: Wendela Teresia (b. 1896), Karl Ivar (b. 1897), Sven Gunnar (b. 1899) and Johan David (b. 1901). It appears Johanna lost her two elder children at a young age. In 1903 her husband crossed the Atlantic and she had her two sons joined him two years later.
Johanna had returned to her native Sweden to visit her parents on their farm in Närlunda and for her return to the USA boarded the Titanic at Southampton with her brother Johan Petterson as third class passengers (Johanna travelling on ticket number 7546 which cost £9, 9s, 6d). Both were lost in the sinking. Their bodies were never found.
At the time of the sinking Johanna's postal address was given as Box 311 in Akeley, Minnesota. It is not clear if she ever lived at this address and when the Swedish consulate in New York tried to contact Johan Ahlin 10 March 1919 the letter was returned with 'Moved new address unknown.' The Mansion House Fund paid 875.52 Kr (£48) to husband and sons with a further 455.25 Kr in damages paid to her husband on 4 June 1914.
Her widower Johan was remarried on 3 June 1916 to Sophie Swanson (b. 1875) and the couple lived in Chicago before moving to Lake County, Illinois in the late 1930s. What became of the couple thereafter is not clear.
Johanna's son Sven was never married and later worked as a timekeeper. He died on 4 January 1939 and was buried in Acacia Park Cemetery, Chicago.
Her son Johan later worked as a clerk and was married to Eleanor Christopherson (1906-1997), another Scandinavian-American, but had no children. He died in Chicago on 13 August 1983 and was buried in Montrose Cemetery in that city.