Henry Treffry Dunn (1838–1899) was Dante Gabriel Rossetti's assistant and a painter in his own right. Dunn's memoirs are a valuable source for the lives of the Pre-Raphaelites. He was paid to be Rossetti's factotum and to create copies of Rossetti's paintings. It has been said that the painting Lady Lilith in the Metropolitan Museum of Art was actually painted by Dunn and only "touched up" by Rossetti.