Much of Barnett's life is still a mystery. There is no trace of him in the 1851, 1871 or 1891 census. Where his is recorded in the census, his occupation is listed as general merchant. But on his death certificate it is recorded as retired Jeweller.
Intriguingly, Barnett's will made in 1900 states "my brother Hyam Barnett now of Zahleh Lebanon". Hyam died in Brighton in 1912. His only next of kin is his niece Sara Yeo (nee Cohen) . Sarah (b 1837) was the daughter of Benjamin Hyam and Lucy Hadida. In 1867 she married Thomas Yeo. Sarah's marriage certificate reveals that her father was Cosman Cohen (1806-1856). He married Sarah's mother who was also named Sarah (1793 - ). Benjamin and David Hyam, step sons, are recorded as living in London with Cosman and Sarah Cohen in the 1851 census.
Simon Sperber, who was present at Barnett's death, was born in Lwow in 1871. Living close to him in Cinderford was Marcus Barnett who in 1901 married Florence Ginzburg who lived in Bath. Marcus and his brother Abraham were both born in 'foreign parts'. Were they distant relatives of Barnett?