Historical newsouvenir token ( Rubel). Peter I (Russian: Пётр I Алексеевич, romanized: Pyotr I Alekseyevich, IPA: [ˈpʲɵtr ɐlʲɪkˈsʲejɪvʲɪtɕ]; 9 June [O.S. 30 May] 1672 – 8 February [O.S. 28 January] 1725), better known as Peter the Great,[note 1] was the Tsar of all Russia from 1682 and the first Emperor of all Russia from 1721 until his death in 1725.