The Inns of Chancery or Hospida Cancellarie were a group of buildings and legal institutions in London initially attached to the Inns of Court and used as offices for the clerks of chancery, from which they drew their name. Existing from at least 1344, the Inns gradually changed their purpose, and became both the offices and accommodation for solicitors (as the Inns of Court were to barristers) and a place of initial training for barristers.
The practice of training barristers at the Inns of Chancery had died out by 1642, and the Inns instead became dedicated associations and offices for solicitors. With the founding of the Society of Gentlemen Practisers in 1739 and the Law Society of England and Wales in 1825, a single unified professional association for solicitors, the purpose of the Inns died out, and after a long period of decline the last one (Clement's Inn) was sold in 1903 and demolished in 1934.
It is believed that the Inns of Chancery evolved in tandem with the Inns of Court. During the 12th and 13th century the law was taught in the City of London, primarily by the clergy. During the 13th century two events happened which destroyed this form of legal education - firstly a decree by Henry III of England that no institutes of legal education could exist in the City of London, and second a papal bull that prohibited the clergy from teaching the law. As a result, the system of legal education fell apart, and the lawyers instead settled immediately outside the City of London as close as possible to Westminster Hall, where Magna Carta provided for a permanent court. This was the small village of Holborn, where they inhabited "hostels" or "inns", which later took their name from the landlord of the Inn in question.
The Inns of Chancery sprung up around the Inns of Court, and took their name and original purpose from the chancery clerks, who used the buildings as hostels and offices where they would draft their writs. As with the Inns of Court the precise dates of founding of the Inns of Chancery are unknown, but the one commonly said to be the oldest is Clifford's Inn, which existed from at least 1344.Thavie's Inn, founded in 1349, is considered to be the next oldest, and several legal historians mistakenly considered it the oldest of them all.