João Rodrigues de Sá

João Rodrigues de Sá (c.1555 - ? ) was the first Count of Penaguião, a Portuguese title. He was succeeded by his son Francisco de Sá de Menezes (1598-1647) and then his son João Rodrigues de Sá e Menezes (1619-1658). His son Francisco de Sá e Menezes (c.1640-1677) was also 1st Marquis of Fontes and his son João Rodrigo de Sá e Menezes succeeded him. His brother João Rodrigues de Sá Menezes (1674-1688) came next and was also 2nd Marquis of Fontes.

Under the administration of John IV of Portugal, João Rodrigues de Sá visited the island of Berlengas accompanied by a military engineer to determine the construction of Fort of São João Baptista (Berlengas).