1) COSMO (1798-1874).-Historian and antiquary, was called to the Scottish Bar in 1822, and was appointed Prof. of Constitutional Law and History in the Univ. of Edin. in 1846. He was the author of _Scotland in the Middle Ages_ (1860), and _Sketches of Early Scottish History_ (1861). He also ed. many historical MSS. for the Bannatyne and other