Peter the Great
While the Poles fought the Swedes, Peter founded the city of Saint Petersburg in 1703, in Ingermanland (a province of the Swedish Empire that he had captured). It was named after his patron saint Saint Peter. He forbade the building of stone edifices outside Saint Petersburg, which he intended to become Russia's capital, so that all stonemasons could participate in the construction of the new city. Between 1713 and 1728 and in 1732–1918, Saint Petersburg was the capital of imperial Russia.
History of Saint Petersburg
"St. Petersburg" is actually used as an English equivalent to three variant forms of the name: originally Санкт-Питер-Бурх (Sankt Piter-Burkh), later Санкт-Петерсбурх (Sankt Petersburkh), and then Санкт-Петербург (Sankt Peterburg). The full name is often substituted by the abbreviation SPb (СПб). "Sankt" was usually confined to writing; people usually called it Петербург (Peterburg) or the common nickname Питер (Piter). Petrograd (Петроград), the name given in 1914 on the outbreak of World War I to avoid the German sound of Petersburg, was a Slavic translation of the previous name. The name was changed to Leningrad (Ленинград) in 1924.