i . ▁Their ▁where about s ▁and ▁identity ▁are ▁to ▁some ▁extent ▁confused ▁in ▁the ▁literature ; ▁some ▁publications ▁present ▁the ▁T eb oli ▁and ▁the ▁Tag abil il ▁as ▁distinct ▁pe op les ; ▁some ▁locate ▁the ▁T bol is ▁to ▁the ▁vic inity ▁of ▁the ▁Bul uan ▁Lake ▁in ▁the ▁Cot ab ato ▁Bas in ▁or ▁in ▁Ag us an ▁del ▁Norte . ▁The ▁T bol is , ▁then , ▁res ide ▁on ▁the ▁mountain ▁s lop es ▁on ▁either ▁side ▁of ▁the ▁upper ▁A lah ▁Valley ▁and ▁the ▁coast al ▁area ▁of ▁M ait um , ▁Ma as im ▁and ▁Ki amba . ▁In ▁former ▁times , ▁the ▁T bol is ▁also ▁inhab ited ▁the ▁upper ▁A lah ▁Valley ▁floor . ▁ ▁Tig w ah on on ▁The ▁Tig w ah on on ▁are ▁a ▁subgroup ▁of ▁Man ob o ▁originally ▁from ▁the ▁Tig wa ▁River ▁bas in ▁near ▁San ▁Fernando , ▁B uk id non . ▁ ▁Um ay am non ▁The ▁Um ay am non ▁are ▁originally ▁from ▁the ▁Um ay am ▁River ▁waters hed ▁and ▁the ▁head w aters ▁of ▁the ▁Pul ang i ▁River . ▁They ▁are ▁a ▁subgroup ▁of ▁the ▁Man ob o . ▁ ▁L anguages ▁The ▁L um ad ▁pe op les ▁speak ▁Philipp ine ▁languages ▁belonging ▁to ▁various ▁branches . ▁These ▁include : ▁ ▁Mind ana o ▁languages ▁Man ob o ▁languages ▁Sub anon ▁language ▁South ▁Mind ana o ▁languages ▁Mans ak an ▁languages ▁M aman wa ▁language ▁Sang ir ic ▁languages