Mani Xenier Bunnag

Khunying Mani Sirivarasan (; September 22, 1915 – September 27, 1999), was a Thai teacher and social worker, and the former daughter-in-law of King Prajadhipok, Rama VII, as she was previously married to Prince Chirasakdi Supraphat, the adopted son of King Prajadhipok.

She is the author of the book "Life is Like a Dream", which is a book that describes the events towards the end of the life of King Prajadhipok in much detail. Khunying Mani was the granddaughter of Chao Phraya Phanuwong Maha Kosathibodi (Tuam Bunnag). She had only one brother, Uthai Phanuwong.

1917, when Phraya Rachanupraphan (Pia Bunnag) brought his family back to Thailand, they stayed in a house that was granted by the King on Si Phraya Road, Soi Phraek Ban Nai, behind Wat Maha Phruettharam (Wat Takhian). who was also studying in the United Kingdom. Their relationship led to their engagement on September 22, 1938, and their wedding ceremony at the Thai Embassy in London, presided over by King Prajadhipok and Queen Rambhai Barni on December 21, 1938. As a result, Manee resigned from Oxford University after two years of study. King Prajadhipok then signed a money order to pay for Mom Manee's scholarship to the Thai government, as Mom Mani had not yet repaid her scholarship.

Prince Chirasak Supraphat and Mom Mani had two sons together, whose descendants were given the surname Sakdidetphanuphan Na Ayutthaya. During World War II, Prince Chirasak Supraphat worked with the ATA company as a pilot and was also a Free Thai in England. This resulted in Prince Chirasak Supraphat's death while piloting a plane and crashing in Scotland while he was on duty. She had two children from her first marriage and one from her second marriage.

Khunying Mani died of lung cancer on September 27, 1999 at Bumrungrad International Hospital, Bangkok, at the age of 84.

Public welfare Khunying Mani and Major General Dr. Pacha Sirivarasan donated funds to build a four-story ENT (ear, nose, and throat) patient building with modern operating rooms, and presented it to Phramongkutklao Hospital. They requested royal permission to name the building "Sakdidej Building."