This is her article from thepeerage: "Lady Elizabeth Howard1 F, #15286, b. 13 November 1780, d. 29 November 1825 Consanguinity Index=0.12%
Lady Elizabeth Howard was born on 13 November 1780. She married John Henry Manners, 5th Duke of Rutland, son of Charles Manners, 4th Duke of Rutland and Lady Mary Isabella Somerset, on 22 April 1799. She died on 29 November 1825 at age 45.
She was the daughter of Frederick Howard, 5th Earl of Carlisle and Lady Margaret Caroline Leveson-Gower. Her married name became Manners.
Children of Lady Elizabeth Howard and John Henry Manners, 5th Duke of Rutland
Emmeline Charlotte Elizabeth Manners d. 30 Oct 1855
Lady Adeliza Elizabeth Gertrude Manners+ d. 26 Oct 1877
Lady Elizabeth Frederica Manners+ d. 20 Mar 1886
George John Henry Manners, Marquess of Granby b. 26 Jun 1807, d. 3 Aug 1807
Lady Katherine Isabella Manners+ b. Feb 1809, d. 20 Apr
1848 George John Frederick Manners, Marquess of Granby b. 20 Aug 1813, d. 15 Jun 1814
Charles Cecil John Manners, 6th Duke of Rutland b. 16 May 1815, d. 3 Mar 1888
John James Robert Manners, 7th Duke of Rutland+ b. 13 Dec 1818, d. 4 Apr 1906
George John Manners+ b. 22 Jun 1820, d. 8 Sep 1874."