History of the Azores passed to João Fonseca and settlers streamed through the port of Armoeira to the small hamlets. The island became permanently populated during the reign of King Manuel I, in the year 1510, by people from various regions of continental Portugal, but mainly from the northern provinces. The island became arable, and grain and vegetables were cultivated. According to Santos et al.'s 2003 maternal DNA study of the Azores, people from Flores exhibit high genetic ancestry (~90%) with the Portuguese mainland, and Pacheco et al.'s 2006 paternal DNA study confirms that around 60% of all Azorean paternal lines are correlated to
Azores caldeira", the noted hot springs grotto. In 1869, the author Mark Twain published "The Innocents Abroad", a travel book, where he described his time in the Azores. The first reference to the island of São Jorge was made in 1439 but the actual date of discovery is unknown. In 1443 the island was already inhabited but active settlement only began with the arrival of the noble Flemish native "Wilhelm Van der Haegen". Arriving at Topo, where he lived and died, he became known as "Guilherme da Silveira" to the islanders. João Vaz Corte-Real received the captaincy of the island in