Blanche Arundell, Dowager Baroness Arundell of Wardour (née Lady Blanche Somerset; 1583 or c. 1584 – 28 October 1649) was an English noblewoman, known as the defender of Wardour Castle, that she defended for nearly a week with just 25 men and her maidservants against a force of 1,300.

[1] She danced in the masque at the marriage of Anne Russell and Henry Somerset, 1st Marquess of Worcester in June 1600.

John Finet described the reception of Isabelle Brûlart, the wife of French ambassador Gaspard Dauvet, Sieur des Marets, at Denmark House on the Strand in December 1617.

[4] During the Civil War, Lord Arundell brought together a regiment of horsemen in support of King Charles I, whom he led into the Battle of Stratton in Cornwall on 16 May 1643.

[1] From 2 May 1643, during the absence of her husband, she defended Wardour Castle, near Tisbury, Wiltshire, for six days with only herself, her children, a few maidservants, and twenty-five men against the Parliamentary forces of thirteen hundred men[5] and artillery commanded by two Parliamentary officers, Sir Edward Hungerford and Colonel Edmund Ludlow.