Question: Who founded the knighthood in which Gino Cassinis was part of?

Related documents: [0]  [DOC] The Order of Merit of the Italian Republic (Italian: "Ordine al merito della Repubblica Italiana" ) was founded as the senior order of knighthood by the second President of the Italian Republic, Luigi Einaudi in 1951. The highest ranking honour of the Republic, it is awarded for "merit acquired by the nation" in the fields of literature, the arts, economy, public service, and social, philanthropic and humanitarian activities and for long and conspicuous service in civilian and military careers. The post-nominal letters for the order are OMRI. The order effectively replaced as national orders the Civil Order of Savoy (1831), the Order of the Crown of Italy (1868), the Order of Saints Maurice and Lazarus (1572) and the Supreme Order of the Most Holy Annunciation (1362). [END] 
[1]  [DOC] Gino Cassinis (27 January 1885 – 13 January 1964) was an Italian Democratic Socialist Party politician. He was born in Milan. He was mayor of Milan. He was knight grand cross and grand officer of the Order of Merit of the Italian Republic. He died in Rome. [END]  
Answer: Luigi Einaudi
Luigi Einaudi