ELLIS, SIR HENRY (1777-1869), English antiquary, was born in London on Nov. 29, 1777. Educated at Merchant Tay lor's school, and at St. John's college, Oxford, he entered the British Museum in 1800. From 1827 to 1856 he was chief libra rian. He died on Jan. 15, 1869. His principal works are : a new edition of Brand's Popular Antiquities (1813) ; Introduction to Domesday Book (1833) ; and Original Letters Illustrative of English History (first series, 1824; second series, 1827; third series, 1846) compiled chiefly from manuscripts in the British Museum and the State Paper office.