The only female "Krom" of the King Rama IX Reign

His Majesty King Bhumibol gave Her Royal Highness the title "Somdet Phra Chao Phee Nang Ther Chao Fa Galyani Vadhana Krommaluang Narathiwat Rajanagarindra" to celebrate Her Royal Highness's sixth cycle (72nd) birthday anniversary on May 6, 1995.

Noble titles given to members of the Royal Family are categorised into birth titles and appointed titles. The highest birth title is Chao Fa, followed by Phra Ong Chao, Mom Chao, Mom Rajawongse and Mom Luang. Appointed titles are given by the King. Royal family members with lower birth titles may be promoted to higher titles, such as from Mom Chao to Phra Ong Chao or from Phra Ong Chao to Chao Tang Krom.

The title Chao Tang Krom first appeared in Ayutthaya period during the reign of King Narai and was categorised into four ranks: Krommaphra, Krommaluang, Krommakhun and Krommamuen. Krommaphra was the title for the Royal Mother and the Crown Prince, Krommaluang was for consorts or respected princesses, Krommakhun wasfor the Crown Prince and Krommamuen was for princes and princesses lower in rank than the Crown Prince.

In the Ratanakosin period, the title "Chao Tang Krom" was categorised into five ranks: Krom Phraya or Krom Somdet Phra was for the most respected princes and princesses; Krommaphra for the Royal Mother, respected elder princes and princesses; Krommaluang for elder princes and princesses; Krommakhun for young princes and princesses; and Krommamuen for Phra Ong Chao or the princes and princesses lower than Chao Fa.

In the Ayutthaya period, the title "Krom" was given to honour princes and princesses who worked well and merited a cadre to assist them under their supervision in the form of a unit or "Krom".

Since the reign of King Rama V, after the abolition of slavery in 1905 when ordinary people were no longer forced to work for the royal court, "Krom" has been an honorary title only. King Rama V gave his children the title "Krom" with the name of provinces in Thailand.

During the present reign, in 1950 and 1952, five princes were given the title "Krom".

On May 8, 1950, Phra Worawongther Phra Ong Chao Dhaninivat was appointed Phra Worawongther Krommamuen Bidyalabh Bridhyakorn.

On May 5, 1952, Phra Chao Worawongther Phra Ong Chao Chumbhotbongse Boripatra was appointed Phra Chao Worawongther Krommamuen Nakhonsawansakdipinit; Phra Chao Worawongther Phra Ong Chao Wan Waithayakon was appointed Phra Chao Worawongther Krommamuen Naradhip Bongprabandh; Phra Worawongther Phra Ong Chao Alongkot was appointed Phra Worawongther Krommamuen Adisorn Udomsak; and Phra Worawongther Phra Ong Chao Nakkhatra Mangkala was appointed Phra Worawongther Krommamuen Chanthaburi Suranath.

The next person to receive the title was Her Royal Highness Princess Galyani Vadhana in May 1995.