Andrew Halliday Duff (1830 - April 10, 1877), British journalist and dramatist, was born at Marnoch, Banffshire. He was educated at Marischal College, Aberdeen, and in 1849 he came to London, and discarding the name of Duff, devoted himself to literature. His first engagement was with the daily papers, and his work having attracted the notice of Thackeray, he was invited to write for the "Cornhill Magazine". Wikipedia
The definitive Wikipedia entry for Andrew Halliday. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Andrew_Halliday