From the Wikipedia page [1] The Liberty of the Rolls consisted of the part of the ancient parish of St Dunstan-in-the-West that was in the Ossulstone hundred of Middlesex, the rest was within the City of London. It became a separate civil parish in 1866. Named perhaps after the ancient Rolls House upon Chancery Lane where the rolls of the Court of Chancery of England were kept, or perhaps, like other parishes, the Rolls Chapel. The site of the house and chapel became the nucleus of the Public Record Office, now the Maugham Library and Provost's Lodgings of King's College London.