John Lubbock was born in 1834, the son of Sir John Lubbock, 3rd Baronet, a London banker, and was brought up in the family home of High Elms Estate, near Downe in Kent.
In 1845, Lubbock began studies at Eton College, and after graduation was employed by his father's bank (which later amalgamated with Coutts & Co), of which he became a partner at the age of twenty-two.