In 1885, the story of Little Lord Fauntleroy was published as a serial in St. Nicholas Magazine, a popular children’s magazine in the US. The author was Frances Hodgson Burnett, who later wrote The Little Princess and A Secret Garden. Burnett lived for a short time near Eliza Brownlow in Knoxville before she and her husband, Swan Burnett, moved to Paris.
Many young boys were dressed as Little Lord Fountleroy in the next ten years and beyond.
William(3) Brownlow Patrick was dressed up as you can see.