Sir Alexander Cuninghame, 1st Baronet ( â March 1685) was a Scottish landowner and aristocrat.
Cuninghame was born in . He was the only son of Alexander Cuninghame (1625âÂÂ) and Anne Crawfurd (1628âÂÂ1649). His sister, Margaret Cuninghame, was the wife of George Meikle of Lesmahagow.
His paternal grandparents were Alexander Cuninghame, 5th Laird of Corsehill (son of Alexander Cuninghame, 4th of Corsehill), and Mary Houstoun (a daughter of John Houstoun of Houston). Through his paternal line, he was a great-great-great-grandson of the 4th Earl of Glencairn through the Earl's second son, Hon. Andrew Cunningham. His maternal grandparents were John Crawfurd of Kilbirnie and Lady Mary Cuninghame (a daughter of the 7th Earl of Glencairn). Through his maternal uncle, Sir John Crawfurd, 1st Baronet, MP for Ayrshire, he was a first cousin of Margaret Crawfurd (wife of Hon. Patrick Crawford, son of the 17th Earl of Crawford) and Ann Crawfurd (wife of Sir Archibald Stewart, 1st Baronet, of Blackhall).
In 1663, his grandfather settled the family estate of Corsehill on him and his affianced wife, reserving to himself the life rent (though he died shortly thereafter in 1667). Reportedly, he was ruined by guaranteeing the credit of his spendthrift cousin, Sir David Cuninghame, 4th Baronet of Robertland.
A Scottish baron and landowner in Dumfriesshire, on 26 February 1672, he was created the 1st Baronet Cuninghame of Corsehill in the Baronetage of Nova Scotia, with remainder to heirs male of the body.
In , he married Mary Stewart (1647âÂÂ1683), a daughter of John Stewart (the son of Sir Archibald Stewart of Blackhall) and Mary Stirling (the daughter of Sir James Stirling and sister to Sir George Stirling, 6th Laird of Keir, Dunblane, Perthshire, and 3rd Laird of Cawder, Bishopbriggs, Lanarkshire). Among her siblings were James Stewart of Lumlock and Sir Archibald Stewart, 1st Baronet, of Blackhall (who married Sir Alexander's first cousin, Ann Crawfurd). Together, they were the parents of:
Sir Alexander died on 25 March 1685 and was succeeded by his only son, Alexander.
Through his son Alexander, he was a grandfather of Sir David Cuninghame, 3rd Baronet, who married Penelope Montgomery by whom he had three sons and a daughter, the eldest of whom, Alexander, married Elizabeth Montgomery, and was father of the 4th, 5th and 6th Baronets.