Walter Stewart, 1st Lord Blantyre (died 8 March 1617) was a Scottish politician, administrator, and judge.
He was the son of Sir John Stewart of Minto and Margaret Stewart sister of James Stewart of Cardonald
Educated with James VI under George Buchanan at Stirling Castle, he was a gentleman in the king's chamber, Knight of Cardonald, Prior of Blantyre, Keeper of the Privy Seal of Scotland from 1582 to 1596, an Extraordinary Lord of Session from 1593, an Octavian from 1596, and Treasurer of Scotland from 1596 to 1599.
In May 1580 twenty five gentlemen were appointed as "pensioners to attend the King's Majesty at all times on his riding and passing to the fields". The riding entourage included Stewart with, Captain James Stewart, Captain Crawford, the Master of Cathcart, Roger Aston, John Carmichael, James Anstruther, Patrick Hume of Polwarth, and John Stewart of Baldynneis.
Between 1587 and 1593 Walter Stewart held the barony of Glasgow, in place of the young Duke of Lennox, and so he appointed the magistrates and Provost of Glasgow.
James VI sent John Carmichael and Blantyre to arrest Elizabeth's Irish rebel Brian O'Rourke and take him to England on 3 April 1591.This caused a riot in Glasgow, because the arrest was thought likely to damage the Irish trade, and Blantyre and Carmichael were cursed as "Queen Elizabeth's knights" and the king for taking "English angels", the annuity or subsidy received from Queen Elizabeth. Carmichael and Blantyre hoped Elizabeth might spare O'Rourke so the inhabitants of Glasgow would be reconciled to them, but he was executed.
In July 1593 he was appointed to a council to manage the estates and finances of Anne of Denmark.
After the Kinmont Willie affair, on 8 July 1596 Blantyre wrote to David Foulis, the Scottish ambassador in London, that he should return if Elizabeth's attitude did not improve. He also discussed the case of a counterfeit coiner.
Blantyre was responsible for the prisoner Angus McDonald McConneil, a son of Sorley Boy MacDonnell, and his wife and servants from August 1596. They were moved from Dumbarton Castle to a house in Dumbarton town, then to Blantyre's own Cardonald Castle, and then lodged in Glasgow.
Blantyre fell off his horse and broke his leg in Edinburgh in February 1597, and while he recovered Lord Ochiltree was treasurer.Roger Aston wrote in April 1597 that his health was weakening and it was feared that he was bewitched. In 1599 he was imprisoned and compelled to resign by James VI, influenced by a group of courtiers in king's bedchamber.
In July 1602 Blantyre joined a committee of "4 Stewarts" to arbitrate between the Marquess of Huntly and the Earl of Moray. The other Stewarts were Lord Ochiltree, Alexander Stewart of Garlies, and the Tutor of Rosyth.
He was a commissioner for union with England in 1604. He was created Lord Blantyre, in the Peerage of Scotland in 1606, and succeeded by William Stewart.
Walter Stewart married Nicola Somerville, daughter of Sir James Somerville of Cambusnethan and Katherine Murray, in December 1582.Their children included;
He was half-brother to Matthew Stewart of Minto, four times Lord Provost of Glasgow.
Ludovic Stewart, 2nd Duke of Lennox and 1st Duke of Richmond, lord of the Manor of Cobham, Kent, was a Scottish nobleman who through their paternal lines was a second cousin of King James VI of Scotland and I of England. He was involved in the Plantation of Ulster in Ireland and the colonization of Maine in New England. Richmond's Island and Cape Richmond as well as Richmond, Maine, are named after him. His magnificent monument with effigies survives in Westminster Abbey.
George Elphinstone of Blythswood was a Scottish landowner, courtier, and Provost of Glasgow.
Sir John Carmichael was a Scottish soldier, the Keeper of Liddesdale, a diplomat, and owner of Fenton Tower at Kingston, East Lothian.
The Octavians were a financial commission of eight in the government of Scotland first appointed by James VI on 9 January 1596.
Robert Bowes (1535?–1597) was an English diplomat, stationed as permanent ambassador to Scotland from 1577 to 1583.
Sir William Bowes of Streatlam,, was an English ambassador to Scotland, Deputy Warden of the West March, Treasurer of Berwick-upon-Tweed, and Member of Parliament for Westmorland.
Sir David Foulis was a Scottish politician.
Alexander Stewart, 1st Earl of Galloway was a Scottish courtier and landowner.
Sir Roger Aston of Cranford, Middlesex, was an English courtier and favourite of James VI of Scotland.
Thomas Foulis was a Scottish goldsmith, mine entrepreneur, and royal financier.
George Young was a Scottish churchman, courtier, member of the Privy Council of Scotland, diplomat, and secretary depute.
Henrietta Stewart (1573–1642) was a Scottish courtier. She was the influential favourite of the queen of Scotland, Anne of Denmark.
Margaret Stewart, Mistress of Ochiltree was a courtier in the household of Anne of Denmark in Scotland and looked after her children Prince Henry, Princess Elizabeth, and Charles I of England
Sir James Sandilands was a courtier to King James VI and I and captain of Blackness Castle
Sir William Keith of Delny was a Scottish courtier and Master of the Royal Wardrobe. He also served as ambassador for James VI to various countries. He was an important intermediary between George Keith, 5th Earl Marischal and the king, the king and courtiers, and the king and foreign governments.
George Nicholson or Nicolson, was an English diplomat in Scotland.
Queen Elizabeth I of England paid a subsidy to King James VI of Scotland from 1586 to 1602. This enabled her to influence James by delaying or deferring payments to his diplomats in London. Records survive of the yearly amounts, and details of the expenditure in some years. A large proportion of the money was spent on the royal wardrobe of James and Anne of Denmark. Some royal expenses were met by Anne of Denmark's dowry, which was known as the "tocher".
Marie Ruthven, Countess of Atholl was a Scottish aristocrat.
William Stewart of Caverston and Traquair, was a Scottish landowner and Captain of Dumbarton Castle.
James MacCartney was a Scottish medical practitioner and apothecary in Edinburgh in the 1590s who collected information for the English diplomat Robert Bowes. MacCartney was a relation of Thomas Hamilton of Priestfield. He was usually known as "Dr MacCartney" and sometimes given the codename "Tertius". He signed his letters to Bowes with a sketch of a flower with three petals.