Question: Who is the paternal grandfather of Ang Tong Reachea?
Sentence (from "Chey Chettha II"): The increasing waves of Vietnamese settlers which followed overwhelmed Chey Chettha II's kingdom—weakened as it was due to war with the Siamese—and slowly Vietnamized the Mekong Delta area, claiming it for their own in the 1690s.
Relevant evidence: No