Joaquim Silvério dos Reis

Joaquim Silvério dos Reis Montenegro Leiria Grutes (1756–1819) was a conspirator who betrayed the Inconfidência Mineira in exchange for having his taxes waived. He was the husband of Bernardina Quitéria de Oliveira Belo, who was a cousin of Francisco Antônio de Oliveira Lopes and aunt of Duque de Caxias and Conde de Tocantins.

Source: Wikipedia — Joaquim Silvério dos Reis (CC BY-SA 4.0)