Il est marié avec Eveline Alicia Juliana Herbert.
Ils se sont mariés le 15 février 1855, il avait 30 ans.
Enfant(s):
Adopted the name Wallop on succeeding to the title.
Isaac Newton Fellowes later Wallop, 5th Earl of Portsmouth (1825– 1891) resumed the name of Wallop when he succeeded to the peerage.
Children of Isaac Newton Wallop, 5th Earl of Portsmouth and Lady Eveline Alicia Juliana Herbert
Lady Rosamond Alicia Wallop+3 d. 19 Nov 1935
Lady Eveline Camilla Wallop2 d. 13 Sep 1894
Lady Catherine Henrietta Wallop+2 d. 21 Aug 1935
Lady Dorothea Hester Bluett Wallop+2 d. 29 Dec 1906
Lady Gwendolen Margaret Wallop+2 d. 14 Feb 1943
Lady Henrietta Anna Wallop2 d. 28 Feb 1932
Newton Wallop, 6th Earl of Portsmouth2 b. 19 Jan 1856, d. 4 Dec 1917
John Fellowes Wallop, 7th Earl of Portsmouth2 b. 27 Dec 1859, d. 7 Sep 1925
Oliver Henry Wallop, 8th Earl of Portsmouth+2 b. 13 Jan 1861, d. 10 Feb 1943
Hon. Robert Gerard Valoynes Wallop2 b. 6 Jul 1864, d. 22 Aug 1940
Rev. Hon. Arthur George Edward Wallop2 b. 12 Oct 1867, d. 22 Dec 1898
Hon. Frederick Henry Arthur Wallop2 b. 16 Feb 1870, d. 9 Aug 1953
Isaac Newton Wallop | |||||||||||||||||||||||||||||||||||
1855 | |||||||||||||||||||||||||||||||||||
Eveline Alicia Juliana Herbert |