governors. Lt. Governor Juan de Garay (1578–1583). Buenos Aires refounded 1580. Lt. Governor Alonso de Vera y Aragón (1583–1587). And de facto governor at Asunción until 1592. Adelantado Governor Juan Torres de Vera y Aragón (1587–1592). Judge of the Royal Audience, married to Juana Ortiz de Zárate. Last appointed adelantado. Governors of the Río de la Plata and Paraguay Governor Hernando Arias de Saavedra ("Hernandarias") (1592–1594). Governor Fernando de Zárate (1594–1595). Governor Juan Ramírez de Velasco (1596–1597). Governor Hernando Arias de Saavedra (1597–1599). Second time. Governor Diego Rodríguez de Valdés y de la Banda (1599–1600). Governor Francés de Beaumont (1600–1602). Appointment formalized 1601. Governor Hernando Arias de Saavedra (1602–1609). Third time. First Jesuit Reduction established. Slave trade restricted. Governor Diego Martín de Negrón (1609–1613). Governor Mateo Leal de Ayala (1613–1615). Governor Hernando Arias de Saavedra (1615–1617). Fourth time. Guayrá (Paraguay) separated into a separate governorate in 1617. Governors of Río de la Plata Governor Hernando Arias de Saavedra (1617–1618). Governor Diego de Góngora (1618–1623). Found guilty post mortem of corruption, allowing trade in slaves and contraband to flourish. Governor Alonso Pérez de Salazar (1623–1624). Governor Francisco de Céspedes (1624–1631). Continued efforts to pacify the Charrua. Governor Pedro Esteban Dávila (1631–1637). Concepción del Bermejo destroyed by natives. Governor Mendo de la Cueva y Benavidez (1637–1640). Defense of Buenos Aires improved. Expedition against the Calchaquís. Fort Santa Teresa erected. Governor Ventura Mojica (or Mujica) (1640–1641). Governor Andrés de Sandoval (1641). Governor Jerónimo Luis de Cabrera (1641–1645). Ban of Portuguese attempted in governorate. Governor Jacinto Lariz (1645–1653). Arrested. Governor Pedro Baigorrí Ruiz (1653–1660). Three French ships successfully repelled from Buenos Aires. Calchaquís repelled from Santa Fe. Governor Alonso Mercado y Villacorta (1660–1663). Request to be able to send two trade ships annually denied. Dutch ships permitted to dock in Buenos Aires. Governor Juan Martínez de Salazar (1663–1674). Continued requests for free commerce. The Royal Audience of Buenos Aires briefly independent of the court at Charcas. Governor Andrés de Robles (1674–1678). Governor José de Garro (1678–1682). Portuguese expelled from Colonia de Sacramento in 1680. Governor José Antonio de Herrera y Sotomayor (1682–1691). Tucuman relocated. Governor Agustín de Robles (1691–1698). Governor Manuel de Prado y Maldonado (1698–1704). Visit from Danish squadron in Buenos Aires. Governor Alonso Juan de Valdés e Inclán (1704–1708). Colonia de Sacramento retaken. Governor Manuel de Velasco y Tejada (1708–1712). Purchased office for 3000 pesos. Arrested. Governor Juan José de Muliloa (1712).