. "Isabel Marshal (9 October 1200 \u2013 17 January 1240) was a medieval English countess. She was the wife of both Gilbert de Clare, 4th Earl of Hertford and 5th Earl of Gloucester and Richard, 1st Earl of Cornwall (son of King John of England). With the former, she was a great grandparent of King Robert the Bruce of Scotland."@en . . "British countess" . . "1200Z"^^ . . . "Marshal, Isabel"@en . . "1200-10-09Z"^^ . "1240Z"^^ . . "Countess of Hertford; Countess of Cornwall"@en . . . . . "1240-01-17Z"^^ . . . .