COX, SIR PERCY ZACHARIAH (b. Herongate, near Brentwood, Essex, England, 20 November 1864, d. Bedford, England, 20 February 1937), officer of the political service in the British Indian government who held several diplomatic posts in the Persian Gulf re­gion in 1893-1923 and played a leading role in nego­tiating the Anglo-Persian Agreement of 1919.

Cox was the youngest son of Arthur Zachariah Cox, of an old East Anglian family; after his father’s death in 1970 he was raised in Brighton and educated at Harrow and Sandhurst, then served with the Cameronians in India from 1884 to 1889, when he joined the Indian staff corps, moving to the Indian political department the following year. He married Louisa Belle Hamilton, whom he had met in Lucknow in 1889. From 1893 to 1904 he served in consular and political posts in British Somaliland and Muscat. In the latter he was instrumental in restoring good rela­tions with Sultan Fayṣal, winning the esteem of the viceroy, George Lord Curzon, and rapid promo­tion. In April 1904 he was named consul-general in Būšehr, responsible to the British foreign office through the British minister in Tehran, and assistant political resident in the Persian Gulf, responsible to the govern­ment of India. In May 1909 he was promoted to resident (Tuson, pp. 4-5; Graves, pp. 15-93).

In order to protect British strategic interests and to impede the progress of other powers, Cox consistently sought peace and stability in southern Persia and the Persian Gulf region, forming alliances with local tribal chiefs and urban notables and thus indirectly under­mining the central Persian authority (Ansari, p. 301; Graves, pp. 95-112; Wright, pp. 70-71). His alliance with Shaikh Ḵaẓʿal, the semi-independent shaikh of Moḥammara (later Ḵorramšahr), in Ḵūzestān, pro­vides a clear example (Ansari, pp. 174, 176, 181-203, 315). Cox first met Ḵaẓʿal in 1905, and the two formed a close friendship, which proved very useful to the British during World War I. The shaikh’s domain was strategically important for the control of the Persian Gulf and development of the Anglo-Persian Oil Com­pany, founded in 1909 (Wilson, 1919, pp. 63-­73). It was Cox who conducted the difficult negotiations, in July 1909, for an agreement between Ḵaẓʿal and the oil company, permitting the latter to build a refinery at Ābādān, in the shaikh’s territory, and a pipeline to it from the oilfields (Wilson, 1941, p. 92). Between 1908 and 1914 the British government, rep­resented by Cox, renewed and upgraded its assurances to Ḵaẓʿal four times (Ansari, pp. 186, 390-97). On other occasions Cox gained the confidence of Ebn Saʿūd of Najd and Mobārak of Kuwait (Cox, apud Bell, 1930, p. 411). In person he was quietly persuasive, with a “commanding appearance” (Wilson, apud Graves, p. 14), linguistic skills, vast knowledge, and a sympathetic attitude that invited trust and admiration (Bell, pp. 307, 343, 377; Skrine, p. 58).

On 6 April 1914 Cox took up an appointment as secretary of the foreign department of the government of India in Bombay. With the outbreak of hostilities, he became chief political officer to Indian Expedition­ary Force D in Mesopotamia. At the same time he remained titular political resident in the Persian Gulf until October 1920, when he was appointed high commissioner in Iraq (Tuson, p. 4).

The critical period of Cox’s career in Persia began when, at Curzon’s insistence, he was detached from service in Iraq and took up his duties as chargé d’affaires and acting minister in Tehran in September 1918 (Cox,

apud Bell, p. 422). In that turbulent political setting his main task was to implement the policies of the foreign office, headed by Curzon, aimed at consolidating Brit­ish power over Persia. The Anglo-Persian Agreement, which he negotiated with the cabinet of Woṯūq-al-­Dawla, was designed to make Britain sole guardian of Persia. Cox considered it “transparently so simple and innocuous that the more it is studied, the less justifica­tion will there be for hostility to it” (letter from Cox to Wilson, cited in Safiri, p. 304), and he was still hopeful about its reception when he left Tehran in June 1920. A master at wielding indirect influence, Cox was equal to the task of reaching agreement on terms with the shah, members of the cabinet, and various groups and individuals. He was, however, unable to quell popular fears of British tutelage or to appease all the politicians in Persia. The agreement was never ratified.

Cox is said to have disliked Tehran and to have felt more at home among the Arabs, who called him simply Cokkus (Bell, p. 338). He retired from active service in Iraq in 1923 and returned to England but continued to travel abroad on occasional diplomatic missions. He died in 1937 (The Times [London], 22 February 1937, pp. 15, 19; 26 February 1937, p. 18; 27 February 1937, p. 14).

In addition to his published works and diaries record­ing mainly hunting expeditions and journeys of explo­ration, a number of Cox’s private papers survive (see Wainwright and Matthews, pp. 68, 105, 120, 194, 325); for his official correspondence, see P. Tuson, The Records of the British Residency and Agencies in the Persian Gulf (India Office records and guides to archive groups), and the following files and series from the British foreign office: FO series 60, series 248 [Būšehr consular correspondence]; FO 371; FO 460 [Moḥammara consular archives]; FO 416).



M. Ansari, The History of Khuzestan, 1878-25. A Study in Provincial Autonomy and Change, Ph.D. diss., The University of Chicago, 1974.

G. Bell, The Letters of Gertrude Bell, ed. Lady Bell, London, 1930. Concise Dictionary of National Biography, 1901-1970, pt. 2, 1982, p. 154.

P. C. Cox, “Some Excursions in Oman,” Geographical Journal 6, 1925, pp. 193-227.

Idem, Some Gulf Memories, n.p., 1928 (repr. from The Times of India).

G. Garthwaite, “The Bakhtiyari Khans, the Government of India, and the British, 1846-1915,” IJMES 3, 1972, pp. 24-44.

P. Graves, The Life of Sir Percy Cox, London, 1941.

F. J. Moberly, ed., The Campaign in Mesopotamia, 1914-1918 I, London, 1923.

F. Safiri, The South Persian Rifles, Ph.D. diss., University of Edinburgh, 1976.

C. Skrine, World War in Iran, London, 1962, pp. 57-61.

P. Tuson, The Records of the British Residency and Agencies in the Persian Gulf, London, 1979.

D. Wainwright and N. Matthews, eds., A Guide to Manuscripts and Docu­ments in the British Isles Relating to the Middle East and North Africa, Oxford, 1980.

A. T. Wilson, Precis of the Relations of the British Government with the Tribes and Sheikhs of Arabistan, Calcutta, 1919.

Idem, The Persian Gulf. An Historical Sketch from the Earliest Times to the Beginning of the Twentieth Century, London, 1928.

Idem, South West Persia. A Political Officer’s Diary, 1887-1914, Lon­don, 1941.

D. Wright, The English amongst the Persians during the Qajar period, 1787-1921, Lon­don, 1977.

(Floreeda Safiri)

Originally Published: December 15, 1993

Last Updated: November 2, 2011

This article is available in print.
Vol. VI, Fasc. 4, pp. 388-390

Cite this entry:

Floreeda Safiri, “COX, PERCY ZACHARIAH,” Encyclopaedia Iranica, VI/4, pp. 388-390, available online at (accessed on 30 December 2012).