Castaño traveled north from Almaden, crossing the Rio Grande near present-day Del Rio, Texas, and reached the Pecos River near what is now Sheffield, Texas.
Gaspar Castaño de Sosa is believed to have been the first European to arrive in the area, during his 1591 trek up the Rio Grande and along the Pecos River, in his effort to establish Spanish colonization of New Mexico.
The first documented Europeans to visit the area were Spanish explorer Gaspar Castaño de Sosa and his men, who traveled up the Pecos River in 1590.
Sammy Sosa | Gaspar de Guzmán, Count-Duke of Olivares | Gaspar Schott | Mercedes Sosa | Gaspar Noé | Gaspar da Cruz | Gaspar Castaño de Sosa | Porfirio Lobo Sosa | José Gaspar Rodríguez de Francia | Jorge Sosa | Gaspar | Fidel Castaño | Ernesto Castano | Vicente Castaño | Sosa v. Alvarez-Machain | Mario Gaspar Pérez | Manuel Sosa | José Ernesto Sosa | Jorge Castano | Jerónimo de Sosa | Jeronimo de Sosa | Hugo Gaspar | Gaspar Sanz | Gaspar, Santa Catarina | Gaspar Llamazares | Gaspar Fagel | Gaspar de Portolà | Gaspar da Costa | Gaspar Correia | Gáspár Bekes |