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
Bede Camm of St. Peter, foundress of the Benedictine Adorers of the Sacred Heart of Montmartre. She had just led her new monastic community from Paris, due to the anti-clerical laws enacted in France at the time. The nuns built a new monastery located in Tyburn, the place of execution of many of the Catholic martyrs of the Tudor period. They opened a small shrine to the martyrs in the crypt of the monastery chapel and became the caretakers of the site. Camm developed a deep respect for the foundress. In 1909 Camm came to the rescue of the Tyburn nuns. The