In 1819, Lambruschini was appointed Archbishop of Genoa. It was rumored that his promotion was to be attributed to the desire of Secretary of State Consalvi to remove from Rome a clergyman who, having acquired too much influence on the pope, was now an obstacle to his own plans for government. In 1826, he was named as Apostolic Nuncio to the Kingdom of France by Pope Pius VII, but was forced to flee his diplomatic post following the 1830 revolution that toppled the Bourbon monarchy and brought House of Orleans pretender Louis-Phillippe to the French throne.