Kaboloan and the so called Tondo Empire were most likely both ruled by a branch of Singhasari and Majapahit royal family aka Rajasa in the latter stages..there were no claimants or documents about the Kaboloan but the writer of Pansonum helped in the attacks against Limahong..obviously both were both under Majapahit suzerainty..
The two Kingdoms might have been fused long before the Spanish came, I think their likely allies would be a fellow Majapahit successor Kingdom like Mataram or Gowa...