Frederick Morton Eden was a barrister. His first marriage in 1857 was to Louisa Anne (d. 1868), daughter of Vice-Admiral Hyde Parker. Their children were Morton (b. 1859), Frederick Charles (b. 1864) and Alice. His second marriage in 1870 was to Fanny Helen, daughter of Edward Pomeroy Barrett-Lennard. Their children were Rowland Frederick (b. 1874), Algernon Graham (b. 1877), and Dorothy Ione Helen. Eden was a cousin of Sir William Eden, with whom he shared a grandfather, the Second Baronet of West Auckland, Durham.
Frederick Morton Eden was a Fellow of All Souls' College Oxford, he also played cricket for Oxford and was a Captain in the Oxford Militia. He went to the Bar at Lincoln's Inn in 1858. During the Eden v. Whistler trial in 1895, he wrote to the Pall Mall Gazette in support of his cousin (#13197).
Foster, Joseph (ed.), Alumni Oxoniensis 1715-1886, Oxford, 1887-1892; Debrett's Peerage, Baronetage and Knightage, London, 1896.