Chula Chakrabongse

Besides the late crown prince, she had two more sons who survived to adulthood: Prince Sommatiwongse Varodaya of Nakhon Si Thammarat, who had died without a son in 1899, and Prince Mahidol who, although deceased, had two living sons.

It thus appeared that Prince Ananda Mahidol would be the first person in the royal line of succession.

Nevertheless, the same debate over the half-foreign Prince Chula Chakrabongse occurred again.

It was argued that King Vajiravudh had virtually exempted the prince's father from the ban in the Succession Law, and the crown might thus be passed to him.

However, since the kingdom was now governed under a constitution, it was the cabinet that would decide.

Opinion was split on the right to succession of Prince Chula Chakrabongse.

A key figure was Pridi Phanomyong, who persuaded the cabinet that the Law should be interpreted as excluding the prince from succession, and that Prince Ananda Mahidol should be the next king.

It also appeared more convenient for the government to have a monarch who was only nine years old and studying in Switzerland.

Chula Chakrabongse (จุลจักรพงษ์; ; 28 March 1908 – 30 December 1963), was a member of the family of the Chakri dynasty of Thailand and of the House of Chakkraphong.

He was the only child of Prince Chakrabongse Bhuvanath and his Ukrainian wife Catherine Desnitski (later Mom Catherine Na Phitsanulok).

He was a grandson of King Chulalongkorn.

Prince Chula Chakrabongse was born on 28 March 1908 in Paruskavan Palace, Bangkok, with the title Mom Chao (His Serene Highness).

Saovabha Phongsri, his grandmother, gave him the name Phongchak (พงษ์จักร; ).

Later his uncle, King Vajiravudh, raised him the higher rank of Phra Chao Worawong Thoe Phra Ong Chao (His Royal Highness Prince) and changed his name to Chunlachakkraphong.

Palace officials affectionately called him "the Little Prince" ( Than Phraong Nu).

When very young, Prince Chula was sent to study in the United Kingdom, where he spent his teenage years, attending Harrow School.

He graduated with Bachelor and Master from Trinity College, University of Cambridge.

He eventually succeeded to the throne in 1910 as King Rama VI.

In 1924 the king instituted the Palace Law of Succession in order to govern subsequent successions.

The law gave priority to the children of his mother Queen Regent Saovabha Phongsri over the children of King Chulalongkorn's two other royal wives.

The law was enacted on the death of King Vajiravudh in 1925 and the crown passed to his youngest brother, Prince Prajadhipok of Sukhothai.

Offering the throne to Prince Prajadhipok was not without a debate.

In doing so, another candidate was bypassed: Prince Chula Chakrabongse, son of the late Field Marshal Prince Chakrabongse Bhuvanath of Phitsanulok, who before his death had been the heir-apparent to King Vajiravudh.

It was questioned whether the Succession Law enacted by King Vajiravudh actually barred Prince Chakrabongse Bhuvanath (and for that matter, Prince Chula Chakrabongse) from succession on the grounds that he married a foreigner (Ukrainian).

However, his marriage had taken place before this law was enacted and had been endorsed by King Chulalongkorn himself.

There was no clear resolution, but in the end the many candidates were passed over and Prince Prajadhipok was enthroned.

When King Prajadhipok later abdicated, since he was the last remaining son of Queen Saovabha, the crown went back to the sons of the queen whose rank was next to hers: Queen Savang Vadhana, mother of the late Crown Prince Vajirunahis.

When Prince Chula's cousin Prince Birabongse Bhanudej ("B. Bira") went to England in 1927, Chula was supervising a racing team called White Mouse Racing.

Prince Bira decided to drive for him.

There is a granite drinking bowl at Mitchem's Corner in Cambridge, donated in 1934 in memory of Prince Chula's dog called Tony.

King Prajadhipok (Rama VII) abdicated in 1935 due to political quarrels with the new quasi-democratic government as well as health problems.

The king decided to abstain from exercising his prerogative to name a successor to the throne.

By that time, the crown had already passed from Prince Mahidol's line to that of his half-brother's when his eldest full brother, Crown Prince Maha Vajirunhis, died as a teenager during King Chulalongkorn's reign.

A half-brother, Prince Vajiravudh (as the next eldest) replaced Prince Vajirunhis as the crown prince.

On 2 March 1935, Prince Ananda Mahidol was elected by the National Assembly and the Thai government to succeed his uncle, King Prajadhipok, as the eighth king of the Chakri dynasty.

In 1936 Chula's White Mouse team purchased an ERA for Bira, and he quickly became one of the leading exponents of this class of international racing.

In 1938 he married Elizabeth Hunter, an English woman (known as Lisba).

They lived at Tredethy, St Mabyn, in Cornwall, in the 1940s and 1950s.

Bira's partnership with Chula ended in late 1948.

Their daughter, Mom Rajawongse Narisa Chakrabhongse, was born in 1956.