A nabob is a conspicuously wealthy man deriving his fortune in the east, especially in India during the 18th century with the privately held East India Company.
In late 19th century San Francisco, rapid urbanization led to an exclusive enclave of the rich and famous on the west coast who built large mansions in the Nob Hill neighborhood. This included prominent tycoons such as Leland Stanford, founder of Stanford University and other members of The Big Four who were known as nabobs, which was shortened to nob, giving the area its eventual name.
In late 19th century San Francisco, rapid urbanization led to an exclusive enclave of the rich and famous on the west coast who built large mansions in the Nob Hill neighborhood. This included prominent tycoons such as Leland Stanford, founder of Stanford University and other members of The Big Four who were known as nabobs, which was shortened to nob, giving the area its eventual name.
https://en.wikipedia.org/wiki/Nabob