In 1431, Gonçalo Velho was in the Vila de Tancos, along the Tagus River, when he received a summons from the Prince Henry, Governor of the Order of Christ, who ordered him to depart from Sagres in a caravel, with instructions to navigate to the western sea, and to "discover some land, return with notice". This first voyage was made to determine the location of "islands" first identified by the Portuguese pilot Diogo de Silves, in 1427. Although the noted chronicler Gaspar Frutuoso has attributed to Gonçalo Velho Cabral the discovery of the seven islands of the Azores, modern historiographer contest this record, limiting his discoveries to the eastern islands alone. In 1431, with less than a few days of travel, Gonçalo Velho discovered a scattering of rocky outcroppings, which he examined and were later named the ""Formigas"". He quickly returned to Sagres, probably due to bad weather.