In April 1870 Allingham retired from the customs service, moved to London and became sub-editor of Fraser's Magazine, eventually becoming editor in succession to James Froude in June 1874, a post he would hold till 1879. On 22 August 1874 he married the illustrator, Helen Paterson, who was twenty-four years younger than he. His wife gave up her work as an illustrator and would become well known under her married name as a water-colour painter. At first the couple lived in London, at 12 Trafalgar Square, Chelsea, near Allingham's friend, Thomas Carlyle, and it was there that they had their first two children: Gerald Carlyle (born 1875 November) and Eva Margaret (born 1877 February). In 1877 appeared Allingham's Songs, Poems and Ballads. In 1881, after the death of Carlyle, the Allinghams moved to Sandhills near Witley in Surrey, where their third child, Henry William, was born in 1882. At this period Allingham published Evil May Day (1883), Blackberries (1884) and Irish Songs and Poems (1887).