The Civil Code of 1734 (Swedish: 1734 års lag), was a code of law passed by the Swedish Riksdag of the Estates in 1734, and put in effect after it had been ratified by Frederick I of Sweden 23 January 1736.[1] It became the foundation of the later civil code in Sweden – and remained so in Finland when annexed by the Russian Empire in 1809; though many alterations have been made in both Sweden and Finland since. The current Swedish Code of Statutes is founded on the civil code of 1734.