Gregory S. Ong  Gregory Santos Ong (born May 25, 1953) is a Filipino jurist and a former Justice of the Sandiganbayan. He was initially appointed as an Associate Justice of the Supreme Court of the Philippines by President Gloria Macapagal-Arroyo on May 16, 2007, but his appointment was subsequently withdrawn after questions arose whether he met the constitutional requirement of natural-born citizenship. On September 23, 2014, he was found guilty of gross misconduct, dishonesty and impropriety and was subsequently dismissed from his position as Justice of the Sandiganbayan by the Supreme Court of the Philippines as a result of an investigation linking him to pork barrel scam mastermind Janet Lim-Napoles. Justice Ong is married to Nancy L. Ong with three children: Neil Gregory, Gregory and Nicole. Ong traces his ancestral lines to one Maria Santos of Malolos, Bulacan, born on November 25, 1881, who was allegedly a Filipino citizen who married Chan Kin, a Chinese citizen; that these two had a son, Juan Santos; that in 1906 Chan Kin died in China, as a result of which Maria Santos reverted to her Filipino citizenship; that at that time Juan Santos was a minor; that Juan Santos thereby also became a Filipino citizen; that Ong’s mother, Dy Guiok Santos, is the daughter of the spouses Juan Santos and Sy Siok Hian, a Chinese citizen, who were married in 1927; that, therefore, Ong's mother was a Filipino citizen at birth; that Dy Guiok Santos later married a Chinese citizen, Eugenio Ong Han Seng, thereby becoming a Chinese citizen; that when Ong was eleven years old his father, Eugenio Ong Han Seng, was naturalized, and as a result he, his brothers and sisters, and his mother were included in the naturalization. Ong finished elementary and high school education at the Philippine Chinese Chen Kuang (1966) and at the Jose Rizal College (with honors, 1970), respectively. Ong earned his AB Political Science degree at Far Eastern University (1975), and his Bachelor of Laws at San Beda College of Law (1979), where he became Grand Judex of Lex Talionis Fraternitas. Ong passed the 1979 Philippine Bar Examination with a bar rating of 76.45%. He studied Master of Laws at the Manuel L. Quezon University (1992). Before his aborted Supreme Court appointment, Ong was the Chairman of the 4th Division of the anti-graft court Sandiganbayan.