List of Lord Chancellors of Scotland
William Comyn (1133-1142)
William de Malvoisin, Bishop of Glasgow, St Andrew's (1199-1211)
Robert Kenleith, Abbot of Dunfermline (1249-1251)
Gamelin, Bishop of St Andrew’s (1251-1255)
Archibald, Bishop of Moray (1255)
Richard of Inverkeithing, Bishop of Dunkeld (1255-1257)
William Wishart, Bishop of Glasgow (1257-1274)
William Fraser, Bishop of St Andrew’s (1275-1282)
Alan of St Edmund, Bishop of Caithness (1282-1285)
Thomas Charteris (1285-1289)

Thomas of Hunsingore (1291-1295) [Barrow]
Alexander Kennedy (1296- ) [Barrow]
Nicholas Balmyle (1301- ) Bishop of Dunblane (1307-1319 died in office) [Barrow] (Also known as "Master Nicholas of St Andrews")
Bernard de Linton, Abbot of Arbroath (1308-1328) (Also known as Abbot of Kilwinning, Bishop of Sodor & Man 1328-1331)

Walter of Galloway (Twynholm)(1326 after Bernard - ) [Barrow] (Was Chancellor at treaty of Corbeil April 1326)

William Brisbane 1332 [?]

Thomas de Charteris (1342-1346)
William Caldwell (1349-1354) (or 1350-1352?)

William Lauder, Bishop of Glasgow (1423-1427)
John Cameron, Bishop of Glasgow (1427-1439)
Sir William Crichton (1439-1444)
James Kennedy, Bishop of St Andrew's (1444)
James Bruce, Bishop of Dunkeld (1444-1449)
Sir William Crichton (1449-1454)
William Sinclair, 3rd Earl of Orkney (1454-1456)
Andrew Stewart, 1st Lord Avandale (1460-1482)
Colin Campbell, 1st Earl of Argyll (1483-1488)
William Elphinstone, Bishop of Aberdeen (1488)
Colin Campbell, 1st Earl of Argyll (1488-1493)
Archibald Douglas, 5th Earl of Angus (1493-1498)
George Gordon, 2nd Earl of Huntly (1498-1501)
James Stewart, Duke of Ross, Archbishop of St Andrew's (1502-1504)
Vacant
Alexander Stewart, Archbishop of St Andrew's (1510-1513)
James Beaton, Archbishop of Glasgow, St Andrew's (1513-1526)
Archibald Douglas, 6th Earl of Angus (1526-1528)
Gavin Dunbar, Archbishop of Glasgow (1528-1542)
Cardinal David Beaton, Archbishop of St Andrew's (1543-1546)
George Gordon, 4th Earl of Huntly (1546-1562)
James Douglas, 4th Earl of Morton (1563-1566)
George Gordon, 5th Earl of Huntly (1566-1567)
James Douglas, 4th Earl of Morton (1567-1572)
Archibald Campbell, 5th Earl of Argyll (1572-1573)
John Lyon, 8th Lord Glamis (1573-1578)
John Stewart, 4th Earl of Atholl (1578-1579)
Colin Campbell, 6th Earl of Argyll (1579-1584)
James Stewart, Earl of Arran (1584-1585)
incomplete 1585-1587
Sir John Maitland (1587-1595)
incomplete 1595-1598
John Graham, 3rd Earl of Montrose (1598-1604)
Alexander Seton, 1st Earl of Dunfermline (1604-1622)
George Hay, 1st Earl of Kinnoull (1622-1634)
John Spottiswoode, Archbishop of St Andrews (1635-1638)
incomplete 1638-1641
John Campbell, 1st Earl of Loudoun (1641-1661)
William Cunningham, 9th Earl of Glencairn (1661-1664)
incomplete 1664-1667
John Leslie, 1st Duke of Rothes (1667-1681)
George Gordon, 1st Earl of Aberdeen (1682-1684)
James Drummond, 4th Earl of Perth (1684-1688)
John Hay, 1st Marquess of Tweeddale (1692-1696)
Patrick Hume, 1st Earl of Marchmont (1696-1702)
James Ogilvy, 1st Earl of Seafield(1702-1704)
John Hay, 2nd Marquess of Tweeddale (1704-1705)
James Ogilvy, 1st Earl of Seafield (1705-1708)

Source: Wikipedia, the free encyclopedia © 2001-2005

This list is from Wikipedia and I do think I can add to it - I am posting it for the purposes of research to show where William Caldwell fits into the list of Scotish Chancellors - I have some more information from GWS Barrow that may expand this list during the critical period of history.

Note that Chancellor Caldwell was in office about the time of the Black Death in Scotland and also during the reign of David II.