Sir Philip Francis GCB was an Irish-born British politician and pamphleteer, thought to be the author of the Letters of Junius, and the chief antagonist of Warren Hastings. His accusations against the latter led to the impeachment of Warren Hastings and Elijah Impey by Parliament. He belonged to the Whig party.

Warren Hastings was a British colonial administrator, who served as the first Governor of the Presidency of Fort William (Bengal), the head of the Supreme Council of Bengal, and so the first Governor-General of Bengal in 1772–1785. He and Robert Clive are credited with laying the foundation of the British Empire in India. He was an energetic organizer and reformer. In 1779–1784 he led forces of the East India Company against a coalition of native states and the French. In the end, the well-organized British side held its own, while France lost influence in India. In 1787, he was accused of corruption and impeached, but he was eventually acquitted in 1795 after a long trial. He was made a Privy Councillor in 1814.