San Marino: Polity Style: 1243-2023 before 1491 Terra di San Marino 1491 - 18 Oct 1739 Serenissima Repubblica di San Marino [1] 18 Oct 1739 incorporated into the Papal States 5 Feb 1740 incorporation rescinded by Papal order 5 Feb 1740 - Serenissima Repubblica di San Marino [1] [1] The term Repubblica, statutory from 1491, occurs in official correspondence from 1448. The earlier Terra di San Marino persists in fossilized form in ceremonial contexts. Last updated on: 15 Apr 2012 20:00:00