The siege of Mafeking was a 217-day siege battle for the town of Mafeking (now called Mafikeng) in South Africa during the Second Boer War from October 1899 to May 1900. The siege received considerable attention as Lord Edward Cecil, the son of the British prime minister, was in the besieged town, as also was Lady Sarah Wilson, a daughter of the Duke of Marlborough and aunt of Winston Churchill. The siege turned the British commander, Colonel Robert Baden-Powell, into a national hero. The Relief of Mafeking (the lifting of the siege), while of little military significance, was a morale boost for the struggling British.