Barnard's Inn is the current home of Gresham College in Holborn, London.
Barnard's Inn dates back at least to the mid-13th century — it was recorded as part of the estate of Sir Adam de Basyng, one time Mayor of London. It passed on to John Mackworth, the Dean of Lincoln, who in turn passed it on to the Dean and Chapter of Lincoln on his death in 1451. Three years later, it was established as an Inn of Chancery — these were schools for law students before they passed on to an Inn of Court. Barnard's Inn was one of two Inns of Chancery linked to Gray's Inn, the other being Staple Inn.
More information on the Wikipedia page .