The son of Sampson Gideon, a Jewish banker in the City of London, he was raised to the peerage of Ireland in 1789.
[3] His father had lobbied for the same honour for himself from Prime Minister Thomas Pelham-Holles, 1st Duke of Newcastle, but was denied it on account of his own religion, as he remained a practising Jew.
The younger Sampson Gideon and his two sisters, on the contrary, whose mother was Christian, were baptised and brought up in the Church of England.
[citation needed] and in the same year he was created an Irish peer, with the title of Baron Eardley, of Spalding in the County of Lincoln.
[6] His two sons predeceased him, and the peerage became extinct on Lord Eardley's death, at 10 Marina Parade, Brighton,[7] on Christmas Day, 1824, aged 80.