Dorset Square is the central feature of an urban layout planned by the Portman Estate (1815-20). The square, architecturally still intact, was laid out on the site of Thomas Lord’s first cricket ground, established in 1787. Sir Laurence Gomme (185-1916), an early pioneer of the Blue Plaques scheme, lived at 24 Dorset Square from 1895 to 1909. The 800th blue plaque marks his home. George Grossmith, co-author of The Diary of a Nobody, also lived in the square. He too has been marked by a blue plaque, as has Dodie Smith, author of 101 Dalmatians.