This is her article from thepeerage: "Lady Octavia Grosvenor F, #9694, b. circa 1832, d. 29 May 1921 Consanguinity Index=0.0%
Lady Octavia Grosvenor was born circa 1832. She was the daughter of Richard Grosvenor, 2nd Marquess of Westminster and Lady Elizabeth Mary Leveson-Gower. She married Colonel Sir Michael Robert Shaw-Stewart, 7th Bt., son of Sir Michael Shaw-Stewart, 6th Bt. and Eliza Mary Farquhar, on 28 December 1852. She died on 29 May 1921.
Her married name became Shaw-Stewart.
Children of Lady Octavia Grosvenor and Colonel Sir Michael Robert Shaw-Stewart, 7th Bt.
Walter Richard Shaw-Stewart+ b. 27 Jun 1861, d. 25 Sep 1934
Sir Michael Hugh Shaw-Stewart, 8th Bt. b. c 1863, d. 29 Jun 1942."