Mariano Paredes y Arrillaga was a conservative general who came to power in an 1846 coup d’etat to become president of Mexico at the start of the Mexican-American War.
After the Americans invaded and Mexico descended into chaos, Paredes decided the best way to preserve the country was to return to a monarchy with a Spanish sovereign. In opposition to this, revolts broke out and Paredes was deposed and exiled to France.
He would return to Mexico in 1848, in time to oppose the Treaty of Guadalupe Hidalgo which ended the war with the United States. He died in poverty in Mexico City in September 1849, having failed the previous year in a second attempt to seize power.