Miss Bridget Delia Mahon was born in Derrymartin, Ballynagoraher, Co Mayo, Ireland in 1892.
She was the daughter of Michael Mahon (b. 1841), a farmer, and Annie Cawley (b. 1856) and she had four siblings: Patrick (b. 1890), Margaret (b. 1894), Michael (b. 1897) and Kate (b. 1899). The family were Roman Catholic and spoke both Irish and English.
The 1901 and 1911 census records show the family living at house 5 in Derrymartin. By the time of the latter census her mother was a widow and working the farm with her two sons. Delia and her sister Margaret were absent from the family home and working elsewhere in their locality as servants, Delia to a physician and his family in Ballyrourke, Co Mayo.
Delia boarded the Titanic at Queenstown as a third class passenger (ticket number 330924 which cost £7, 15s) and was part of a large group of passengers travelling from the same district in Mayo. The group included John and Catherine McHugh Bourke and John's sister Mary Bourke; Nora Fleming, Mary Mangan, Bridget Donohoe, cousins Patrick and Mary Canavan, James Flynn, Catherine and Annie McGowan, Annie Kelly and Bridget McDermott. Delia was travelling to Brooklyn, New York where she had friends and family.
Delia died in the sinking and her body, if recovered, was never identified.