Sir Edward Tyas Cook was a journalist and editor of the Pall Mall Gazette from 1890-1892.
He is mentioned in JW's correspondence about 1891, while he was Editor of the Pall Mall Gazette. He was co-editor of John Ruskin's Complete Works.
'Death Of Sir E. T. Cook. An Accomplished Editor', Times, London, 2 october 1919, p. 11.