Mr Matthew Sadlier was born in Rynn, near Mohill in Co Leitrim, Ireland around 1893.
He was the son of Matthew Sadlier (b. 1861), a labourer and later a shepherd, and his wife Catherine Duke (b. 1853) who had married in Mohill in 1881. One of nine children, Matthew grew up in a Church of Ireland household and his known siblings were: Thomas (b. 1882), William (b. 1883), Jane (b. 1885), Fanny (b. 1886), Henry (b. 1890) and Kate (b. 1892).
He and his family appear on the 1901 census living at house 5 in Clooncar, Rynn and later on the 1911 census at house 1, Clooncoe, Rynn. By the time of the latter census Matthew is described as an 18-year-old agricultural labourer.
Matthew boarded the Titanic at Queenstown as a third class passenger (ticket number 367655 which cost £7, 14s, 7d). He was travelling to Lakewood, New Jersey where his brother Thomas lived.
Sadlier died in the sinking; his body, if recovered, was never identified.