What is "dimasaua"

Dimasaua, also spelled Dimasawa and Dimasava, was the invented name created by 17th-century Spanish missionary Fr. Francisco Colín, S.J., pointing to a tiny isle in southern Leyte whose chief, according to Colín, "gave the most signal service" to Ferdinand Magellan and his crew at the port of Butuan in March–April 1521.

The incident is described in a three-paragraph epitome of Magellan's sojourn in Philippine waters, part of a historical study entitled Labor evangelica obreros de la compañia de Jesus en las islas Filipinas, which was published 1663 in Madrid.