When her husband succeeded as 2nd Earl of Godolphin in 1712, she became Countess of Godolphin. An act of the English parliament in 1706 allowed the 1st Duke's daughters to inherit his English titles. Following his death in 1722, Lady Godolphin became suo jure Duchess of Marlborough .
Laura herself was previously married to and divorced from Walter Long, 2nd Viscount Long and William Ward, 3rd Earl of Dudley. The Duke died at a hospital in London on 11 March 1972, and was succeeded by his son John Spencer-Churchill, Marquess of Blandford. He and his first wife are buried in the churchyard of St Martin's Church, Bladon.
This 2nd Earl of Godolphin married Henrietta, 2nd Duchess of Marlborough. Their only son, William Godolphin, Marquess of Blandford , was childless and predeceased both his parents. In 1735 the 2nd Earl was created Baron Godolphin , of Helston, in the Peerage of Great Britain , with remainder, in default of male issue of his own, to the male issue of his deceased uncle Henry Godolphin , Dean of ...
1685–1688: Henry Mordaunt, 2nd Earl of Peterborough; Grooms of the Stole to William III (1689–1702) 1689–1700: William Bentinck, 1st Earl of Portland; 1700–1702: Henry Sydney, 1st Earl of Romney; Grooms of the Stole to Anne (1702–1714) 1702–1711: Sarah Churchill, Countess of Marlborough (later Duchess of Marlborough)
In 1863 Marlborough joined the British Army, purchasing a commission in the rank of Lieutenant in the Royal Horse Guards. He was initiated into the Freemasonry in January 1871 along with his brother Randolph, in the Churchill Lodge in London but resigned in 1872. In the following years, he was also initiated into the Ancient Order of Druids.