The ruling royal house of Kelantan today is descended from Tuanku Long Yunus. According to the genealogy compiled by Dato’ Perdana Nik Mahmood Bin Nik Ismail which was published in 1932, the Kelantan ruler Long Yunus had several children namely Tengku Long Muhammad (who later succeeded Long Yunus as Sultan Muhammad I of Kelantan), Engku Puan Teh (who married Tunku Muhammad son of Sultan Zainal Abidin I of Terengganu), Tengku Long Muda (styled Tengku Muda), Tengku Long Pandak (styled Tengku Seri Maharaja), Tengku Long Zainal (styled Bendahara of Kelantan) who ruled the territory of Banggol, Tengku Long Tan (styled Tengku Temenggong Aria Pahlawan), Tengku Long Yusuf, Tengku Tuan Nawi (who married the Yang Dipertuan Tila of Terengganu) and Tengku Penambang (who married one Engku Abdul Kadir of Besut). The title ‘Long’ at the beginning of their names is derived from the Siamese aristocratic title – ‘Luang’.
Sultan Muhammad I reigned from 1794 – 1835. Upon his death, he was succeeded as Sultan of Kelantan by his nephew – Tengku Senik , son of Tengku Tan Temenggong mentioned earlier. Tengku Senik ruled Kelantan with the reigning name Sultan Muhammad II. This Sultan Muhammad II is commonly known in history as ‘Sultan Muhammad Mulut Merah’. He married his paternal first cousin – Tengku Ta Tuan Besar binti Tengku Long Yusuf and begot Tengku Sulung and Tengku Jaafar. Tengku Sulung succeeded his father as the Sultan of Kelantan reigning as Sultan Ahmad Tengah and Tengku Jaafar was made the Tengku Temenggong of Kelantan.
Sultan Ahmad had several children namely Tengku Kundor (who later succeeded as Sultan of Kelantan with the name Sultan Muhammad III), Tengku Mansur (who later succeeded as Sultan Mansur of Kelantan), Tengku Salleh (styled Tengku Temenggong), Tengku Chik Abdullah (styled Bendahara of Kelantan), Tengku Besar Tuan Mahmud (styled Tengku Seri Maharaja), Tengku Idris (styled Tengku Petra Semerak), Tengku Sulaiman (styled Tengku Seri Pekerma Raja), Tengku Besar Tuan Yusuf (styled Tengku Indera Diraja) and Tengku Abdul Rahman (styled Tengku Ismara).
Sultan Muhammad III ruled Kelantan from 1889 – 1891 and was succeeded by his brother Tengku Mansur who reigned as Sultan Mansur. Sultan Mansur died in 1899 and was succeeded by his nephew – Tengku Senik, son of the late Sultan Muhammad III. This Tengku Senik ruled as Sultan Muhammad IV and is regarded as the father of modern Kelantan. Sultan Muhammad IV had other siblings namely Tengku Zainal Abidin (styled as Raja Muda of Kelantan) and Tengku Abdul Rahman (styled Tengku Seri Yahya Kelantan).
The Raja Muda Tengku Zainal Abidin had a son named Tengku Muhammad Hamzah who was later made Tengku Seri Maharaja of Kelantan. This Tengku Hamzah had several children namely Tengku Azizah (who married one Tengku Abdul Hamid of Pattani) and Tengku Razaleigh (former Finance Minister of Malaysia).
Sultan Muhammad IV ruled Kelantan until 1920 and was succeeded by his eldest son – Tengku Ismail who reigned as Sultan Ismail. Sultan Ismail’s younger brother, Tengku Ibrahim was styled Raja Kelantan – ranked below the Sultan of Kelantan. Sultan Ismail ruled Kelantan from 1920 to 1943 during the Japanese Occupation. Tengku Ibrahim later succeeded Sultan Ismail as Sultan Ibrahim.
This Sultan Ibrahim ruled Kelantan since the Japanese Occupation, through the British Military Administration, Malayan Union and later the Federation of Malaya. Sultan Ibrahim was present at the Merdeka Stadium on Merdeka Day in 1957. Three years later, Sultan Ibrahim died. In that particular year, people of Kelantan experienced 3 royal mournings – for the death of Sultan Ibrahim of Kelantan, the Yang Dipertuan Agong Tuanku Abdul Rahman and the Yang Dipertuan Agong Sultan Hisamuddin Alam Shah.
During the reign of Sultan of Ibrahim, his eldest son Tengku Indera Petra was made the Raja Muda. But later, Tengku Indera Petra was removed from the line of succession and was replaced by his younger brother – Tengku Yahya Petra (styled Tengku Mahkota of Kelantan). In 1960, following the death of Sultan Ibrahim, the Tengku Mahkota Yahya Petra succeeded as Sultan Yahya Petra.
In 1975, the Conference of Rulers elected Sultan Yahya Petra as the Yang Dipertuan Agong of Malaysia succeeding Sultan Abdul Halim Muazzam Shah of Kedah who ended his tenure as Agong. Unfortunately, Sultan Yahya did not complete his term in office as Yang Dipertuan Agong. He died in Kuala Lumpur on 29th March 1979. He was succeeded by his son – Tengku Ismail Petra who later reigned as Sultan Ismail Petra – sometimes known as Sultan Ismail II of Kelantan.
Sultan Ismail Petra married Tengku Anis – daughter of Tengku Abdul Hamid of Pattani and Tengku Azizah (daughter of Tengku Seri Maharaja Muhammad Hamzah mentioned earlier). Sultan Ismail Petra ruled Kelantan from 1979 to 2010. In 2009, he was admitted to the hospital and was bed-ridden ever since. In 2010, the Succession Council of Kelantan removed Sultan Ismail Petra from the throne in favour of his eldest son – Tengku Muhammad Faris Petra who later decided to reign as Sultan Muhammad V of Kelantan. Sultan Ismail Petra is allowed to use the title Sultan for life.