Henry Mayhew (25 November 1812 – 25 July 1887) was an English social researcher, journalist, playwright and advocate of reform. He was one of the co-founders of the satirical and humorous magazine Punch in 1841, and was the magazine's joint-editor, with Mark Lemon, in its early days. He is also known for his work as a social researcher, publishing an extensive series of newspaper articles in the Morning Chronicle that was later compiled into the book series London Labour and the London Poor (1851), a groundbreaking and influential survey of the city's poor.
He was born in London, one of seventeen children of Joshua Mayhew. He was educated at Westminster School before running away from his studies to sea. He then served with the East India Company as a midshipman on a ship bound for Calcutta. He returned after several years, in 1829, becoming a trainee lawyer in Wales. He left this and became a freelance journalist. He contributed to The Thief, a readers' digest, followed quickly by editing a weekly journal – Figaro in London. Mayhew reputedly fled his creditors and holed up at The Erwood Inn, a small public house in the village of Erwood, south of Builth Wells in Wales.
In 1835 Mayhew found himself in a state of debt and, along with a fellow writer, escaped to Paris to avoid his creditors. He spent his time writing and in the company of other writers including William Thackeray and Douglas Jerrold. Mayhew spent over ten years in Paris returning to England in the 1850s whereby he was involved in several literary adventures, mostly the writing of plays. Two of his plays – But, However and the Wandering Minstrel – were successful, whilst his early work Figaro in London was less successful.
On 17 July 1841 Mayhew cofounded Punch magazine. At its founding the magazine was jointly edited by Mayhew and Mark Lemon. The two men hired a group of writers and also illustrators to aid them. These included Douglas Jerrold, Angus Reach, John Leech, Richard Doyle and Shirley Brooks. Initially it was subtitled The London Charivari, this being a reference to a satirical humour magazine published in France under the title Le Charivari (a work read often whilst Mayhew was in Paris). Reflecting their satiric and humorous intent, the two editors took for their name and masthead the anarchic glove puppet Mr. Punch.