John Allen was born near Edinburgh on 3 February 1771 and died in London on 10 April 1843. In 1792 he took a degree in medicine at Edinburgh University under Professor James Gregory. Five years later, he applied unsuccessfully for the professorship of moral philosophy at Glasgow. In 1802–1805 he accompanied Lord and Lady Holland as medical adviser and companion on successive tours through France, Italy and Spain. On his return he engaged in various literary pursuits, and contributed about forty articles to the Edinburgh Review, mostly on the British Constitution and French and Spanish history. In 1811 he became Warden, and in 1820, Master, of Dulwich College, London, and he remained in London until his death, continuing to write. His major publication was his Inquiry into the Rise and Growth of the Royal Prerogative (1830).
From The Continuum Encyclopedia of British Philosophy in Oxford Reference.