Note 3 — Letter from Fernando de Silva to Felipe IV
Reading edition
La Concepción describes the Spanish expedition to Formosa (Historia de Philipinas, v, pp. 114–122) and the labors of Dominican missionaries there; he says that the Spanish fort was erected on an islet which they named San Salvador, near which was an excellent harbor called Santissima Trinidad. Apparently these localities were on the northeastern coast of the island.