After the death of his wife, Walsingham married secondly the Hon. Emily Elizabeth Julia Thellusson, daughter and coheiress of John Thellusson, 2nd Baron Rendlesham, with whom he had another four sons and four daughters:
John Augustus de Grey, 7th Baron Walsingham (21 Mar 1849 - 21 Mar 1929)
Hon. Beatrice (16 Nov 1853 - 16 Oct 1927). Like her sister, she too married a son of Lord Shrewsbury, Admiral Walter Cecil Carpenter on 10 February 1887. They had no children.
Barry of six argent and azure, in chief three annulets gules; crest: A wyvern's head or; supporters: Two wyverns regardant argent collard azure chained or and charged on the breast with three annulets gules; motto: Excitari Non Herescere ("to be spirited not inactive") [3]