Popular Name(s): Tok Guru Haji Hassan, Ong Hassan, Ong San
Biographical Details: b. Ligor (Today Nakhon Si Thammarat, Thailand). When he was young, his family moved to Kelantan. He married a woman from Kampung Mahligai, near Bukit Panau, Kelantan and afterward embarked for Mecca. When he returned to Southeast Asia, c. 1849, instead of settling on the peninsula, he went to Cambodia, where he was known as Ong Hassan or Ong San. He settled in the city of Kampot, where a number of Malay people (Ivako) from Kelantan came to spread Islam. He later moved to Kampung Luong.
- Haji Qasim al-Fatani
- Shaykh Da’ud b. ‘Abd Allah al-Fatani (1769-1847), Mecca
- Tok Ku Paloh Terengganu
- Daud, Ismail Che. Tokoh-tokoh Ulama’ Semenanjung Melayu, vol. 1, 3rd ed. Kota Bharu: Majlis Ugama Islam dan Adat Istiadat Melayu Kelantan, 2001: 628.