Janet Stewart

Her mother—the fourth royal mistress of James IV to bear his offspring—was Isabel, daughter of James Stewart, 1st Earl of Buchan (who bore the nickname "Hearty James"). Janet's parents were distantly related (precisely, half second cousins once removed) by a common ancestor: Joan Beaufort, Queen of Scots.

Janet was one of the ladies who kept vigil over the body of Mary of Guise at Edinburgh Castle in June 1560. The ladies were not at first given mourning clothes, and Janet quoted in Latin a phrase from the Book of Joel to the English diplomat Thomas Randolph, "Scindite corda vestra, non vestimenta," Rend your heart, not your garments. Afterwards, Janet applied to the Privy Council for permission to leave Scotland with her son "Lord Hary de Valoys" on 22 August 1560. Henry took part in the St. Bartholomew's Day massacre and was killed in a duel in 1586.

In November 1549 the English prisoner James Wilford was exchanged for the release of her son James Lord Fleming who had been captured during the war of the Rough Wooing. In October 1552, Janet's situation in Scotland was described by Mary of Guise in a letter written to her brother, the Cardinal of Lorraine. There had been talk of marrying Janet off to Henri Cleutin, Guise's military advisor. Although one of Janet's daughters had informed Mary of Guise that her mother did not wish to leave Scotland, Guise knew that Janet had discussed leaving Scotland with the Governor, Regent Arran, and wanted to see Henry II that winter. Guise told the Cardinal to reassure Catherine de' Medici, the queen of France, that Janet would not be leaving Scotland.

In 1548, mother and daughter accompanied the young queen to France. The Bishop of Orkney, Robert Reid, expressed worry over the lady's lack of French; as Janet was only fluent in Scots, he questioned her ability to communicate to French doctors any potential symptoms of illness seen in Mary. At the royal court of France, the lady Janet soon attracted the attentions of King Henry II and became his lover. Their affair resulted in pregnancy, and—either before or after bearing the French monarch an illegitimate son—Janet was sent back to Scotland and replaced as governess to Mary by Françoise de Paroy. Her boy, called Henri de Valois-Angoulême (1551–June, 1586), was "the chief and most highly favored natural son of the King". He was legitimized and went on to become the "Grand Prior of France, Governor of Provence, and Admiral of the Levantine Sea."

Lord Fleming was killed at the Battle of Pinkie in 1547. The following year, presumably due to her unofficial membership in the royal Stewart family, the widow Fleming was appointed governess or nurse to her infant half-niece Mary, Queen of Scots (her new mistress having been fathered by her late half-brother). Her own daughter, Mary Fleming, also joined the queen's household as a lady-in-waiting.

Janet Stewart, Lady Fleming (17 July 1502 – 20 February 1562), called la Belle Écossaise (French for 'the Beautiful Scotswoman'), was an illegitimate daughter of King James IV of Scotland who served as governess to her half-niece Mary, Queen of Scots. Janet was briefly a mistress of King Henry II of France, by whom she had a legitimated son: Henri d'Angoulême. Her daughter, Mary Fleming, was one of the young queen's "Four Marys".