Mapulon

Tagalog

Uncertain. Possibilities are:

From ma- + pulong (“meeting”), because the seven animals of the constellation seem to meet together
From Mapulon, god of seasons in Tagalog mythology.
Possibly from or related to Ivatan mapolon, an authority in the barangays of Batanes during the pre-historic period. The souls of the social upper class after death were said to enter the heavens and become stars.

Mapulon (Baybayin spelling ᜋᜉᜓᜎᜓᜈ᜔)

Noceda, Fr. Juan José de, Sanlucar, Fr. Pedro de (1860) Vocabulario de la lengua tagala, compuesto por varios religiosos doctos y graves‎^[1] (in Spanish), Manila: Ramirez y Giraudier
San Buena Ventura, Fr. Pedro de (1613) Juan de Silva, editor, Vocabulario de lengua tagala: El romance castellano puesto primero‎^[2], La Noble Villa de Pila, page 130: “Cabrillas) Mapolon ([pp]) ſiete eſtrellas [en el] çielo, metaf) de polon que es jũta por q̃ andan juntas.”
Serrano-Laktaw, Pedro (1914) Diccionario tagálog-hispano, Ateneo de Manila, page 48: “Apulon. astron. Cabrillas. f. pl.”.
Dante L. Ambrosio (2005) “BALATIK: Katutubong Bituin ng mga Pilipino”, in Philippine Social Sciences Review‎^[3], volume 57, number 1
Plansecia, Juan de (1589) “Customs of the Tagalogs”, in The Philippine Islands, 1493–1898, volume vii, →ISBN, pages 178-179
F. Landa Jocano (1969) Outline of Philippine Mythology‎^[4], Centro Escolar University Research and Development Center
Florentino H. Hornedo (2000) Taming the Wind: Ethno-cultural History on the Ivatan of the Batanes Isles‎^[5], University of Santo Tomas Publishing House, →ISBN
Florentino H. Hornedo (1994) “Death and After Death: Ivatan Beliefs and Practices”, in Philippine Studies‎^[6], volume 42, number 4, →ISSN, pages 509–527
“Mapolong”, in Pambansang Diksiyonaryo | Diksiyonaryo.ph, Manila, 2018