Dr.William Lee Baran of Phoenix, AZ:Information about Robert IRVINE IV
Sir Alexander Robert IRVINE IV (b. Abt. 1385, d. date unknown)

Knighted in 1424 after acting as one of the Commissioners appointed by the Estates of Scotland in 1423 concerning the ransom of King James I, and from 1440 to 1442 was Captian and Governor of the burgh of Aberdeen. He was given as Tocher (Dower) the lands of Strachin in Kincardine by Charter dated Oct 16, 1411. - http://www.justcallbob.com/irvine.html
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Per Elson Irwin's files: Robert was actually the brother of Sir Alexander de Irwyn and assumed the name Alexander when his brother and nephew, Alexander, were killed in 1411 at Battle of Harclaw.
He was born probably late 1300s, possibly 1385 or a little later.
From William Parkin's webpage: "Robert IRVINE ("Sir Alexander" IV) (b.abt 1385 Drum Castle, Aberdeenshire, Scotland) m. Elizabeth De KEITH, d/o Robert KEITH. The marriage was arranged to end a violent feud between the KEITHs & IRVINEs. Robert was the son of Alexander De IRWYNE II & Lady MONTFORD. Robert became the 4th Laird of Drum and assumed the name "Alexander" when his brother & nephew were killed at the Battle of Harclaw in 1411. "
Title: World Connect Project, Nanci Presley-Holley
Text: Robert was actually the brother of Sir Alexander de Irwyn and assumed the name Alexander when his brother and nephew, Alexander, were killed in 1411 at Battle of Harclaw
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More About Robert IRVINE IV:
Occupation: 4th Laird of Drum.
Children of Robert IRVINE IV and Elizabeth de KEITH are:
- +Alexander IRVINE V, b. Abt. 1457, Drum Castle, Drumfriesshire, Aberdeen Scotland, d. 1493, Drum Castle, Drumfriesshire, Aberdeen Scotland.