Margaret "Molly" Brown (née Tobin) (July 18, 1867 – October 26, 1932) was an American socialite, philanthropist, and activist who became famous due to her survival of the 1912 sinking of the RMS Titanic, after exhorting the crew of Lifeboat No. 6 to return to look for survivors. It is unclear whether any survivors were found after Lifeboat No. 6 returned to search. She became known after her death as "The Unsinkable Molly Brown", although during her life, her friends called her "Maggie". A 1960 Broadway musical, and a 1964 film adaptation of the musical were produced, based on her life. Both were titled The Unsinkable Molly Brown.
Born Margaret Tobin in Hannibal, Missouri, her parents were Irish immigrants John Tobin (1820–1899) and Johanna Collins (1825–1905). Her siblings were Daniel (born 1863), William (born 1869), and Helen (born 1871). Added to these, Margaret had two half-sisters: Catherine Bridget Tobin, by her father's first marriage, and Mary Ann Collins, by her mother's first marriage. Both her mother and father had been widowed young.
At age 18, Margaret relocated to Leadville, Colorado with her sister, and got a job in a department store.