The second name, Abucay, comes from a Filipino place name (Abucay, Bataan), known because there is the second oldest church of Philippines (Santo Domingo Abucay).
According this link, it is from Tagalog origin:
http://www.asiafolks.com/index.php?showtopic=138&mode=linearplus
Lumia
http://onomastica.mailcatala.com