The Rt Hon Sir Austen Henry Layard GCB (5 March 1817 ??5 July 1894) was an English traveller, archaeologist, cuneiformist, art historian, draughtsman, collector, author, politician and diplomat, best known as the excavator of Nimrud and of Niniveh, where he uncovered a large proportion of the Assyrian palace reliefs known, and in 1851 the library of Ashurbanipal.