Ilhabela is an archipelago and city situated in the Atlantic Ocean six kilometres off the coast of São Paulo state in Brazil. The city is 205 km (127 mi) from the city of São Paulo and 340 km (210 mi) from the city of Rio de Janeiro. The largest island, although commonly called Ilhabela, is officially named Ilha de São Sebastião. It, the other islands and the islets make up the municipality of Ilhabela.

The Constitutionalist Revolution of 1932 is the name given to the uprising of the population of the Brazilian state of São Paulo against the Brazilian Revolution of 1930 when Getúlio Vargas assumed the nation's presidency; Vargas was supported by the people, the military and the political elites of Minas Gerais, Rio Grande do Sul and Paraíba. The movement grew out of local resentment from the fact that Vargas ruled by decree, unbound by a Constitution, in a provisional government. The 1930 Revolution also affected São Paulo by eroding the autonomy that states enjoyed during the term of the 1891 Constitution and preventing the inauguration of the governor of São Paulo, Júlio Prestes, who had been elected president of Brazil in 1930, while simultaneously overthrowing President Washington Luís, who was governor of São Paulo from 1920 to 1924. These events marked the end of the First Brazilian Republic.