After studying in Paris and London, he became private secretary to Frederick North, 5th Earl of Guilford, Governor of the Ionian Islands.

During the Greek War of Independence, he occupied several important administrative and diplomatic posts.

He was thrice Greek minister (ambassador) to London (1834–1837, 1841–1843 and 1849–1862),[1] and in 1850 envoy-extraordinary to Paris.

His funeral oration for his friend Lord Byron, delivered in the cathedral of Missolonghi in 1824[2][3] was translated into many languages.

He was the author of Istoria tis Ellinikis Epanastaseos (London, 1853–1857), his work on the history of the Greek revolution.