WILLIAM FORBES (1807-1892).-Historian, 2nd _s._ of James S. of Rubislaw, friend of Sir Walter Scott, was a Writer to the Signet in Edinburgh, and Clerk of the Bills in the Court of Session. He wrote and ed. historical works of considerable authority, _The Highlanders of Scotland_ (1837), and his most important work, _Celtic Scotland_ (1876-80)