João Castelo

João Castelo Ribeiro Gonçalves (October 19, 1937 – December 11, 2016) was a Brazilian politician and lawyer. Castelo served as Governor of Maranhão from March 15, 1979, to May 15, 1982. He was born in Caxias, Maranhão, Brazil.
Castelo died in São Paulo, Brazil on December 11, 2016 after complications from a surgery. He was aged 79.