Mr John J. Lamb 1 was born in Ballyboden, Rathfarnham, Dublin, Ireland on 9 February 1881.
He was the son of John Lamb (b. 1838) and Maria Quinn (2). He had three surviving siblings: Catherine Theresa (b. 1872) and twin brothers Patrick and Martin (b. 1876). Another sibling, Marianna (b. 1869), apparently died at a young age.
The family had, according to census records, emigrated to the USA around 1885 and later settled in Providence, Rhode Island. The 1900 census shows that John's mother had already passed away and his widowed father had taken in his unmarried sister Margaret (b. 1845) to help in the running of their home. By the time of the 1910 census John's father has also passed away and he is recorded as living with his two unmarried brothers and his aunt Margaret. His sister, Mrs John Andrew Lyons, was a resident of 92 Nichols Street in Providence.
In September 1911 John had accompanied his aunt Margaret Lamb to their native Ireland, visiting her birthplace in Co Wicklow. On 11 April 1912 he wrote to his sister notifying her that he was returning home alone aboard Titanic. He boarded the ship at Queenstown as a second class passenger (ticket number 240261 which cost £10, 14s,2d).
John Lamb died in the sinking and his body, if recovered, was never identified.
Both his brothers Martin and Patrick seemingly were never married and were shown on the 1920 census still living with their sister Catherine and her family in Providence. The 1935 census shows both the brothers still unmarried, living at 78 Woodbine Street in Providence. What became of them is unknown.