Arun Kumar Sinha, 2nd Baron Sinha

Arun Kumar Sinha's father was made a peer when he was Parliamentary Under Secretary of State for India in 1919. When his father died, there was much argument, lasting several years, on the question of whether his eldest son could receive a Writ of Summons to Parliament as a Baron, or whether he was disqualified because he was the offspring of a 'potentially polygamous marriage'.

Eventually the argument was settled in 1939 by the decision of Lord Maugham in the Committee for Privileges in favour of Lord Arun Sinha's claim, with the result that he was listed as a member of the House of Lords. In 1959, Lord A. K. Sinha possessed a UK passport, that had been issued in 1955, describing him as a British subject. Some legal experts believed that, although he was not a citizen of the UK and colonies, he was qualified to be registered under section 6(1) of the British Nationality Act, 1948 on the basis that he had applied to the Home Office for registration. However, it was refused on the grounds that he was not ordinarily resident in the UK.

Relevant correspondence between the Secretary of State, the Foreign Office and the Home Office, and the difficulties he had experienced with regards to the refusal of his British Passport is in the National Archives record (PRO) DO35/10425.

Case of Aroon Kumar Sinha, on his claim to the Barony of Sinha of Raipur in 1938 is in record (PRO) TS16/150. His petition for Writ of Summons to Parliament as Baron Sinha's is in (PRO) HO45/18798 covering dates 1936-41.