Albert Charles Challen

The portrait of Mary Seacole in oils, c. 1869, by Albert Charles Challen. The original is on display at the National Portrait Gallery in London. Albert Charles Challen (8 October 1847 in Islington – 1 September 1881 in Camberwell) was a British artist. He is best known as the painter of a portrait of Mary Seacole in 1869, when she was around 65 years old and he was 22. The rediscovery of the portrait was announced in January 2005, and it is held by the National Portrait Gallery.

Born in Islington, the 1871 UK census shows Challen living in Hammersmith, with his profession given as "art student (painting)". By the 1881 census, he was living in Camberwell, and was a "practising artist".

Challen died of tuberculosis at the age of 33 on 1 September 1881 in Camberwell, Surrey.