Portman Estate area remained largely residential, attracting the prosperous middle class who wanted to live near the centre of London. There were also mews for tradesmen and servants. At the southwest corner of the Estate, where Marble Arch now stands, was the Tyburn gallows, London’s principal place of public execution until 1783. Development of the area north of the Marylebone Road around Dorset Square continued after 1815, and to the North West in Lisson Green, workers’ cottages were built from 1820 to 1840. Many of the original Georgian houses north of Portman Square were redeveloped as mansion blocks, which were let on
Tyburn body on Judgement Day (see Jack Sheppard, Dick Turpin or William Spiggot). The first victim of the "Tyburn Tree" was John Story, a Roman Catholic who was convicted and tried for treason. A plaque to the "Catholic martyrs" executed at Tyburn in the period 1535–1681 is located at 8 Hyde Park Place, the site of Tyburn convent. Among the more notable individuals suspended from the "Tree" in the following centuries were John Bradshaw, Henry Ireton and Oliver Cromwell, who were already dead but were disinterred and hanged at Tyburn in January 1661 on the orders of the Cavalier Parliament in