The mediaeval roots of the Convention lay in the 13th-century
Court of the Four Burghs which comprised delegates from
Berwick,
Edinburgh,
Roxburgh and
Stirling. (In 1369
Lanark and
Linlithgow replaced Berwick and Roxburgh after these came under English occupation.) Representatives of these burghs met in advance of parliamentary sittings and communicated with the
sovereign through the Court or through the
Chamberlain who presided over its meetings in his function as the Crown's chief fiscal officer. The Court, described in a charter from the reign of
James II (1430–60) as the
Parliament of the Four Burghs, The earliest record of its deliberations dates from 1292 when "the four burghs" were asked to interpret the law on a question of debt. The Court applied a single set of rules and its decisions were binding on all royal burghs. The evolution of burgh representation in relation to the history of the
Scottish Parliament was a long and gradual process, the record of which has been to a large extent obscured by the loss of Scotland's national records at various times in the country's history. The fragmentary nature of the surviving evidence makes it difficult to give a precise chronology of the development. As the main source of
specie in the kingdom the burghs were specially summoned by royal letters to convene at the sittings of parliament. The traditionally accepted date for the first occasion of their being present is 1326, when they were summoned to appear at the parliament of
Robert I held at
Cambuskenneth. The reason appears to have been the King's need to restore damage done to the royal
demesnes during the
Wars of Independence, It is not, however, clear whether the burgesses sat alongside the bishops and barons as a separate estate within the parliament itself. When taxation had to be raised to pay the ransom for the release of
David II from English captivity, the burghs were consulted again at Scone in 1357 and empowered to negotiate the release. Thus, 1357 has been seen as the date for burgh commissioners establishing themselves as a political class within the parliament, indicated by the first use of the term "
three estates (
tres communitates) of the realm" to describe the parliament's composition. The burghs were consulted again at the parliament held in
Stirling in 1405 when 50,000 merks had to be raised for "the King's fynance", to meet
Henry VI's demand for "expenses incurred" by
James I during his long imprisonment in England. For this session it was decided that two or three commissioners from every burgh south of the
Spey should attend to "treat, ordain and determine upon all things concerning the utility of the common weal of all the King’s burghs". which met at every session of parliament from that time onwards. (his involvement ended formally in 1532). == Reign of James III ==