Fr João Mariano da Virgem Maria Pacheco was a Goan Diocesan Priest who worked in the Goan Church of Our Lady of Grace at Madel, Chorao, Goa as the Vicar. The Our Lady of Grace Church at Chorao, Goa was built in 1551 and is among the older Goan Churches in the archdiocese. The Chorao Church at Madel is dedicated to Our Lady of Grace. He was a native of Margao, Goa. He renounced his service on 14 April 1820.