Blanche's unmarried maternal uncle, the Duke of Devonshire, favoured a marriage between his heir,
William Cavendish, and his niece. The Duke felt Blanche had humility and lacked self-consciousness, while William was intelligent but overly serious. Before the couple were even introduced, the Duke made preparations; he held a ball for Blanche, then seventeen years old and, weeks later, William proposed to her and was quickly accepted. Blanche married William Cavendish on 6 August 1829, a few years prior to his inheriting the earldom of Burlington from his grandfather,
George Cavendish, 1st Earl of Burlington. It would prove to be a happy marriage, as the pair shared the same political views and deeply religious values. The couple had five children, one of whom died in infancy: • William Cavendish, Lord Cavendish (8 October 1831 – 15 May 1834) •
Spencer Compton Cavendish, 8th Duke of Devonshire (23 July 1833 – 24 March 1908) • Lady Louisa Caroline Cavendish (1835 – 21 Sep 1907), who married the
Hon. Francis Egerton • Rt. Hon.
Lord Frederick Charles Cavendish (30 November 1836 – 6 May 1882) •
Lord Edward Cavendish (28 January 1838 – 18 May 1891) From 1838 until her death, the countess was a
Lady of the Bedchamber to Queen Victoria. Blanche died at the age of 28, and was deeply mourned by both her husband and her uncle. She and her husband are both interred at
St Peter's Church, Edensor, in accordance with Cavendish family tradition. An inscription in the Painted Hall at
Chatsworth commemorates her. The 6th Duke completed his reconstruction of the house in the year of her death, 1840, and constructed an "Urn to Blanche" at the top of the Long Walk in the gardens. ==References==