Many of these early settlers were referred to as former inhabitants of Great Britain or Brittany, and the region continued to be referred to as "Bretanha" throughout the centuries (many from former Templar settlements). The name stuck, even as the number of English residents dwindled in proportion to the native Portuguese that settled the lands increased. A study on the linguistic influences of Bretanha, by Maria Clara Rolão Bernardo, reaffirmed this early conviction, while Lacerda Machado noted the greater influence of immigrant populations from Alto-Alentejo subregion in the rest of the island. Frutuoso continued to identify a small community of 82 homes (in a region that extended from Nossa Senhora dos Remédios, in the northeast, to Mosteiros, in the northwest) and whose residents cultivated wheat and collected woad for export. Frutuoso, in particular, identified local resident Braz Alvres, a descendant of one of the earlier settlers, who gave his name to one of the peaks in the area (Pico de João Alvres), and who continued to tend his lands in the grotto of João Bom. Similarly, Pico da Mafra (which is located between Bretanha and Mosteiros), was named for a settler who came from the area of Mafra on the continent. It was Baron Fernandes, another resident of the grotto of João Bom, who discovered an interesting agricultural technique in order to perpetuate consistent crop yields in this region. In 1550, he came upon the idea of planting pulse (Lupinus albus) around the edges of his wheat crops, which had the effect of fortifying the wheat. He did the same for his beans, and discovered the same effects. The practice of using the pulse soon disseminated throughout the island and archipelago. Then, when another settler, Lopo Pessoa, arrived on the island he went one step further; he began to alternate his crops annually, between pulse and wheat, to increase his yields.