Mornington Crescent is a street in Camden, London, England. It was built in the 1820s, on a greenfield site just to the north of central London. The crescent was named after the Earl of Mornington, brother of the Duke of Wellington. Comprising three curved terraces grouped in a crescent form around communal gardens, the north side of the crescent (numbers 37-46) was constructed first, dating from the 1820s or earlier.