This sub-collection mainly consists of private correspondence, including letters Mundy sent to his father and uncle after operations against Borneo pirates in 1846. There are also copies of letters from when he was second in command in the Mediterranean in 1860-1861, and Commander-in-Chief on the North America and West Indies station in 1867-1869.

Administrative / biographical background
George Rodney Mundy was born in 1805, the second son of General Godfrey Basil Meynell Mundy and his wife Sarah Brydges Rodney. He was the grandson of George Bridges Rodney, first Lord Rodney (1718-1792) and the nephew of Admiral Sir George Mundy (1777-1861). He entered the Royal Naval College at Portsmouth in 1818 and at the end of the following year was appointed to the frigate HMS PHAETON (1782) on the North American station. He served on the Mediterranean and South American stations before being promoted to lieutenant and appointed to HMS ECLAIR (1807) in 1826. Mundy served on HMS CHALLENGER (1826) and HMS PYRAMUS (1810) before promotion to the rank of commander. In 1832 he was on HMS DONEGAL (captured 1798) as a confidential agent under Sir Pulteney Malcolm on the coast of the Netherlands, and in the following year was employed by the First Lord of the Admiralty on a special mission to the Netherlands and Belgium. He also served at the Siege of Antwerp in this period. In 1833 Mundy was given command of the sloop HMS FAVOURITE (1829) for service in the Mediterranean. In 1846 he was in command of the frigate HMS IRIS (1840), part of the East Indies squadron under Rear-Admiral Sir Thomas John Cochrane. In co-operation with James Brooke (Rajah of Sarawak), Mundy was engaged for six months in a series of operations against the pirates of Borneo. With the departure of Cochrane for China, Mundy was left as senior officer on the Borneo station. Following a treaty with the Sultan of Brunei, he took possession of the island of Labuan in 1846. In 1854 he was appointed to the screw battleship HMS NILE (1854) in the Baltic. During September and October of the following year he commanded a detached force in Biorko Sound, which he secured against strong Russian forces. This position had a major role in plans for an assault on Kronstadt in the following year. In 1857 Mundy was promoted to rear-admiral and in 1859 became second in command in the Mediterranean. He was Commander-in-Chief on the North American and West Indies station in 1867-1869 and at Portsmouth in 1872-1875. Mundy was nominated a CB in 1856, was promoted to KCB in 1862, and was made a GCB in 1877. In the latter year he was also promoted to admiral of the fleet on the retired list. He died in London in 1884. His service record can be found under the references ADM 196/5/381 and ADM 196/37/254 at The National Archives. The following books by Mundy were published by John Murray, London: ‘Narrative of Events in Borneo and Celebes, down to the Occupation of Labuan: From the Journals of James Brooke, Esq., Rajah of Sarawak, and Governor of Labuan. Together with a Narrative of the Operations of HMS Iris.’ ‘HMS Hannibal at Palermo and Naples during the Italian Revolution 1859-1861.’ (See the items PBD4268 and PBD3218 in the Caird Library Catalogue.)