John Schaw

Sir John Shaw, 3rd Baronet (c. 1679–1752) of Greenock was a Scottish Whig politician who sat in the House of Commons between 1708 and 1734. He was instrumental in the construction of Greenock Harbour, and took part in actions against the Jacobite risings.

Shaw was the eldest son of Sir John Shaw, 2nd Baronet and his wife Eleanor Nicolson, daughter of Sir Thomas Nicolson, 2nd Baronet, of Carnock. The Shaw (or Schaw) family owned estates in Clackmannan, and his father became instrumental in developing the growth of Greenock to rival Glasgow on the River Clyde, and in particular seeking funds to build a harbour at Greenock. Shaw was educated at Glasgow in 1694. He married Margaret Dalrymple, eldest daughter of Hon. Sir Hew Dalrymple, 1st Baronet of North Berwick, Haddington on 15 March 1700.

Shaw's various family properties at Greenock, Renfrewshire, Sauchie, Clackmannanshire; and Carnock Stirlingshire gave him several options for a parliamentary seat at the 1708 general election, and he chose to stand for Renfrewshire. He was returned unopposed as Member of Parliament for Renfrewshire. He and his fellow citizens raised their own funds to build Greenock Harbour, and the work was completed in 1710, with quays extended out into Sir John's Bay to enclose the harbour. Shaw did not stand at the 1710 and 1713 general elections, but he continued fight for better regulation of customs in western Scotland.

With the support of the Duke of Argyll, Shaw revived his parliamentary career, and was returned as a Whig MP for Clackmannanshire in the 1722 general election. He supported the government and voted for the bills of pains and penalties against those involved in the Atterbury plot. He protested to Walpole against filling offices in Scotland with Englishmen. He was active on behalf of the Government. in the malt tax riots of 1725, when the Glasgow magistrates would not take action against the mob. For several years he had been pressing for strong measures to prevent the running of Irish goods into Scotland, and in 1725 was granted a commission which permitted him 'to burn all boats that shall bring meal or grain from Ireland to Scotland'. On his death, his estates went to the family of his sister Margaret, who married Sir John Houston, 3rd Baronet and was grandmother of Sir John Stewart. Stewart adopted the additional surname Shaw, and his succession continued as the Shaw Stewart baronets of Greenock and Blackhall.