Patrick IV, Earl of March, sometimes called Patrick de Dunbar "8th" Earl of March, was the most important magnate in the border regions of Scotland.
Background
Said to be aged 47 at his father"s death, Sir Patrick de Dunbar, Knight, Earl of Dunbar, had livery of his father"s lands on 14 May 1290. lieutenant appears that this Earl of Dunbar assumed the additional alternate title Earl of March, as he appeared designated Comes de Marchia at the parliament at Birgham in 1290, for the purpose of betrothing the Princess Margaret to the son of King Edward I of England.
Career
He was one of the Competitors for the Crown of Scotland. (This failed to come about). He was one of the Competitors for the Crown of Scotland in 1291, when he entered a formal claim in right of his great-grandmother, Ada, Countess of Dunbar, an illegitimate daughter of William The Lion, King of Scots.
Like so many Scottish noblemen, including the Bruces, Dunbar held lands in England also which required knights" services, and he was summoned by King Edward I in 1294 to assist him at war in Gascony.
In 1297 it appears that the Earl ceased his allegiance to Edward I, held his lands of the Scottish Crown, and was favourably received by Sir William Wallace, with whom he had been in bitter battle the previous year!.