Robert Seton, 1st Earl of Winton (1553 – 22 March 1603) was one of the Scottish peers who supported Mary, Queen of Scots.
The son of George Seton, 7th Lord Seton, Robert Seton grew up active in the affairs of his father and of the State. He was educated early in France, and accompanied his father during his ambassadorships to France during the reign of Queen Mary. As a youth, he grew up a close childhood friend of the Queen’s son, the future King James VI.
Like his father, he was strongly attached to the Queen and to the Royal House of Stuart, and was part of his father’s rescue party for Queen Mary from Loch Leven Castle. He was also present at the battle of Langside in 1568. He was later one of the party who rescued King James VI from the hands of the Douglases, and supported his monarch during the Gowrie and other conspiracies of the time.
Upon the death of his father, in 1585, Robert succeeded as 6th Lord Seton. Although his father left the estates heavily encumbered by reason of the great expense of several embassies and of his losses suffered by adhering to the Queen’s party, yet by prudence and ability he was soon able to put his affairs in good condition and provide both sons and daughters with respectable fortunes. "He was very hospitable, and kept a noble house, the king and queen being frequently there, and all French and other ambassadors and strangers of quality were nobly entertained."
He was a great builder and a wise improver of his property, especially by working on the old harbor of Cockenzie, along the Firth of Forth, a curious fishing village of great antiquity whose history is little known. It originally sheltered only small boats, but when improved by art and accommodated vessels of a larger size. In January, 1599, the king granted him a charter under the Great Seal of Scotland concerning Cockenzie, which had previously been erected into a free port and burgh of barony.