Richard Plantagenet Campbell Temple-Nugent-Brydges-Chandos-Grenville, 3rd Duke of Buckingham and Chandos, GCSI, PC, DL[needs IPA] (10 September 1823 – 26 March 1889), styled Earl Temple until 1839 and Marquess of Chandos from 1839 to 1861, was a British soldier, politician and administrator of the 19th century.

He was a close friend and subordinate of Benjamin Disraeli and served as the secretary of state for the colonies from 1867 to 1868 and governor of Madras from 1875 to 1880.

Buckingham entered politics, as Lord Chandos, in 1846 when he was elected unopposed from Buckinghamshire as a candidate of the Conservative Party.

He was 15 years of age when his paternal grandfather died and his father became the 2nd Duke of Buckingham and Chandos.

[2] Two years after graduation, Lord Chandos (as he then was) was commissioned a Lieutenant in the Royal Buckinghamshire Yeomanry and he would eventually become Honorary Colonel of that regiment.

In 1861, he succeeded his father as Duke of Buckingham and Chandos (and in various other titles across four Peerages) and took his seat in the House of Lords.

Buckingham's tenure ended in December 1868 when the Conservative Party ministry of Benjamin Disraeli resigned.

Though the lordship was the most minor of Buckingham's many titles, it was the only one that could be inherited by his daughters, and he established his right to it at a time when the likelihood emerged that he would leave no male heir.

[14] When the Conservative Party was re-elected to power in the United Kingdom in 1874 and Disraeli became the Prime Minister once again, Buckingham was appointed Governor of the Madras Presidency, British India.

[2] Buckingham Street in Penang, Malaysia was also named after him by the Tamil labourers who were brought there during the British colonial period.

Displeasure of the tribes of the northern part of the Presidency over the stringent taxation schemes of the British government erupted in the form of a major rebellion in 1879.

[16] On 30 August 1880, William Patrick Adam was appointed Governor of Madras[17] and he succeeded Buckingham in December 1880.

Gradually, towards the later part of his life his financial situation improved and by 1883, he owned 10,482 acres (4,242 ha) of land with a total value of £18,080.

His illness was unexpected and not originally thought to be serious; the House of Lords postponed voting on several bills until he recovered.

Within a week, however, his illness proved fatal, despite the efforts of Dr. Henry Walter Kiallmark, the family physician, and Sir James Paget, who was called in to assist.

Widowed in 1889, Alice, Dowager Duchess of Buckingham and Chandos, married the 1st Earl Egerton in 1894.