Luigi Havea and Panepasa Havea were among ten accused found guilty of kidnapping Jindarat from her home on March 1 last year.
Another Tongan identified as Tevita Fangupo charged in the case, was cleared of kidnapping charges.
The ten people found guilty in the case are Seng Lek Liev (25), Joseph Haurua (33), Sodarith Sao (25), Aphichart Korhomklang (30), Luigi Havea (26), Panepasa Havea (25), Masi Vaifale (34), Rogers Paleaaesina (25), Raymond Brown and a woman with name suppression, reports Stuff.co