He was a lord of session from 1704 to 1714; ambassador to Denmark from 1715 to 1721, and lord clerk register from 1716 to 1733. His son Hugh Hume, 3rd earl (1708-1794), who entered parliament in 1734 at the same time as his twin brother Alexander (d. 1756), afterwards lord clerk register of Scotland, was keeper of the great seal of Scotland, one of Bolingbroke's most intimate friends and one of Pope's executors. His two sons having predeceased their father, the earldom became dormant, Marchmont House, Berwickshire, and the estates passing to Sir Hugh Purves, bart., a descendant of the 2nd earl, who took the name of Hume-Campbell. The 3rd earl had, however, three daughters, one of whom, Diana (d. 1827), married Walter Scott of Harden, Berwickshire; and in 1835 her son Hugh Hepburne-Scott (1758-1841) successfully claimed the Scottish barony of Polwarth. In 1867 his grandson, Walter Hugh (b. 1838), became 6th Lord Polwarth. See _The Marchmont Papers_, ed. Sir G. H. Rose (1831). MARCHPANE, or MARZIPAN, a sweetmeat made of sweet almonds and sugar pounded and worked into a paste, and moulded into various shapes, or used in the icing of cakes, &c. The best marchpane comes from Germany, that from Königsberg being celebrated. The origin of the word has been much discussed. It is common in various forms in most European languages, Romanic or Teutonic; Italian has _marzapane_, French _massepain_, and German _marzipan_, which has in English to some extent superseded the true English form "marchpane." Italian seems to have been the source from which the word passed into other languages. In Johann Burchard's _Diarium curiae romanae_ (1483-1492) the Latin form appears as _martiapanis_ (Du Cange, _Glossarium_ s.v.), and Minshseu explains the word as _Martius Panis_, bread of Mars, from the "towers, castles and such like" that appeared on elaborate works of the confectioner's art made of this sweatmeat. Another derivation is that from Gr. [Greek: maza], barley cake, and Lat. _panis_. A connexion has been sought with the name of a Venetian coin, _matapanus_ (Du Cange, s.v.), on which was a figure of Christ enthroned, struck by Enrico Dandolo, doge of Venice (1192-1205). From the coin the word was applied to a small box, and hence apparently to the sweetmeat contained in it.