Career
Clennell"s father was a hat-manufacturer in Newcastle on Tyne. He was unsuccessful in business, and therefore became a teacher. Clennell moved to Hackney, London in 1816.
He was a contributor to the Commercial and Agricultural Magazine, and attracted many supporters while working on a new journal, assisted by the chemist John Sadler.
He wrote for Nicholson"s Journal, and was editor of the Tradesman. He was a contributor to Rees"s Cyclopædia, but it is not known on what topics he contributed.
