Question: What Filipino playright wrote a zarzuela about the archipelago that Ferdinand Magellan claimed for the king of Spain on Easter Sunday, 32 March, 1521?
Sentence (from "History of the Philippines (1521–1898)"): On Easter Sunday, 31 March 1521, at Limasawa Island, Southern Leyte, as is stated in Pigafetta's Primo Viaggio Intorno El Mondo (First Voyage Around the World), Magellan solemnly planted a cross on the summit of a hill overlooking the sea and claimed for the king of Spain possession of the islands he had seen, naming them "Archipelago of Saint Lazarus".
Relevant evidence: Yes