General Notes

Sir David Fitz Walter Fitz Gilbert, 2nd of Cadzow; fought battles of Halidon Hill 1333 and Durham 1346 (where captured by the English), benefactor diocese of Glasgow 1361, one of the leading Scottish nobles who consented to the settlement of the Crown on Robert II 1371.  [Burke's Peerage]

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The following I obtained from Karen Hamilton, World Connect db=alaskalady, rootsweb.com
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The story of the Hamiltons is a story of bravery, romance, intrigue, stupidity, splendour, ambition, and yes, even treachery. It can be rightly claimed that the history of this great family is the history of Scotland.

The Hamiltons were the most important of the Lowland clans. At one time they aspired to the crown itself, as serious rivals to the Stuarts. Though they did not lead the same lifestyle as the Highland clans, their hereditary chiefship, network of cadet houses with dependents, and their distinctive tartan make it clear they were truly a Scottish Clan, with the sense of blood kniship and family loyalties which are inseparable from this concept.

Since early in the 14th century, the Hamilton family has played a prominent part in Scottish history. It was a Hamilton who fought alongside Robert the Bruce at Bannockburn; a Hamilton who was heir to the Scottish throne in the 16th century and who arranged the marriage between Mary Queen of Scots and the Dauphin of France; and it was a Hamilton that Hess tried to contact by parachuting into Scotland during World War II.

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Burkes Genealogical and Heraldic History of the Peerage Baronetage and Knightage" One Hundred and Fifth Edition

He probably succeeded his father before 1346. He was a faithful adherent to the interests of King David II and accompained him on all his excursions into the northern counties of England. At the battle of Durham, 17 Oct,1346, he was the King's Special Envoy and Attendent. He was captured by the English at the Battle of Neville's Cross (also called the Battle of Durham), in company with his namesake David II, son of Bruce. Like the King, Hamilton was not released until a heavy ransom had been paid. He was knighted prior to 1361. When the succession to the crown of Scotland was settled on John, Earl of Carrick, and his successors at Scone, Sir David appears as one of the Barons in the Parliament of Scotland on 27 Mar, 1371 and 4 apr 1373.

Granted the royal barony of Cadzow by David II, not known to have used the surname de Hamilton (or any other), fought at Halidon Hill and at Durham (where he was taken prisoner 1346), one of the Scottish magnates who arranged the settlement of the Crown on Robert III 1371.