Bruce was on occasion resident in a royal centre which Edward I himself would visit frequently during his reign. Robert's first appearance in history is on a witness list of a charter issued by Alexander Og MacDonald, Lord of Islay. His name appears in the company of the Bishop of Argyll, the vicar of Arran, a Kintyre clerk, his father, and a host of Gaelic notaries from Carrick. Robert Bruce, the king to be, was sixteen years of age when Margaret, Maid of Norway, died in 1290. It is also around this time that Robert would have been knighted, and he began to appear on the political stage in the Bruce dynastic interest. "Great Cause" Robert's mother died early in 1292. In November of the same year, Edward I of England, on behalf of the Guardians of Scotland and following the Great Cause, awarded the vacant Crown of Scotland to his grandfather's first cousin once removed, John Balliol. Almost immediately, Robert de Brus, 5th Lord of Annandale, resigned his lordship of Annandale and transferred his claim to the Scottish throne to his son, antedating this statement to 7 November. In turn, that son, Robert de Brus, 6th Lord of Annandale, resigned his earldom of Carrick to his eldest son, Robert, the future king, so as to protect the Bruce's kingship claim while their middle lord (Robert the Bruce's father) now held only English lands. While the Bruces' bid for the throne had ended in failure, the Balliols' triumph propelled the eighteen-year-old Robert the Bruce onto the political stage in his own right. Earl of Carrick (1292–1306) Bruces regroup Even after John's accession, Edward still continued to assert his authority over Scotland, and relations between the two kings soon began to deteriorate. The Bruces sided with King Edward against King John and his Comyn allies. Robert the Bruce and his father both considered John a usurper. Against the objections of the Scots, Edward I agreed to hear appeals on cases ruled on by the court of the Guardians that had governed Scotland during the interregnum. A further provocation came in a case brought by Macduff, son of Malcolm, Earl of Fife, in which Edward demanded that John appear in person before the English Parliament to answer the charges. This the Scottish king did, but the final straw was Edward's demand that the Scottish magnates provide military service in England's war against