Note 23 — Chapter LXX
Reading edition
Apparently meaning here, “the country of the Irrayas,” rather than the name of any distinct district. The Irrayas are in modern times a heathen tribe, of mixed Malay and Negrito blood, dwelling in the southern part of Isabela province, Luzón, on the western slopes of the Palanan range, and on tributary streams far up the Rio Grande de Cagayán.