During his earlier years he practised portraiture as a miniaturist; and, having studied in the schools of the Royal Academy, he exhibited his first work in oil, Hermia and Helena, a subject from A Midsummer Night's Dream, in the Royal Academy Exhibition of 1819. In 1820, he gained the gold medal and a three years' travelling studentship for his Una and the Red Cross Knight in the Cave of Despair. He accompanied his friend John Keats the poet to Italy and nursed him till his death in 1821
In 1861 he was appointed British consul at Rome, a post which he held till 1872, and during a great part of the time he also acted as Italian consul. His most remarkable work is the Spectre Ship from the Ancient Mariner. He painted Cordelia Watching by the Bed of Lear, The Roman Beggar, Ariel, The Fountain, and Rienzi, executed a large altarpiece for the church of St Paul at Rome, and produced many portraits, including one of Baron Bunsen and several of Keats. He died at Rome in 1879.
Original text from the 9th edition of Encyclopædia Britannica
Severn was an English painter and friend of the poet John Keats.
There are autograph letters to Elizabeth (Montgomerie) Severn and Walter Severn from various correspondents as well as a manuscript letter in the hand of Charles Armitage Brown from John Keats to Frances Mary (Keats) Llanos Gutiérrez.
There are many illustrated letters including a letter with drawings in watercolor by Arthur Severn, and a drawing in ink copied by Walter Severn of proposed design for the graves of John Keats and JosephSevern.