1911 Encyclopædia Britannica, Volume 15… (1911)
“ ITO, HIROBUMI, Prince (1841–1909) , Japanese statesman, was born in 1841, being the son of Ito Jūzō, and (like his father) began life as a retainer of the lord of Choshu, one of the most powerful nobles of Japan. Choshu, in common with many of his fellow Daimyos, was bitterly opposed to the rule of the shôgun or tycoon, and when this rule resulted in the conclusion of the treaty with Commodore M. C. Perry in 1854, the smouldering discontent broke out into open hostility against both parties to the compact. ”
