author
1878–1942
Best remembered as a playwright and screenwriter, he is closely linked with the early 20th-century hit Mr. Wu. His work moved between stage and screen at a time when popular drama was rapidly changing.

by Louise Jordan Miln, Harold Owen, Harry M. Vernon
Harry M. Vernon, also listed as Harry Maurice Vernon, was an American playwright and screenwriter. Public-domain library records identify him as the author of Mr. Wu and describe him as living from 1880 to 1942.
His best-known surviving credit is Mr. Wu (1918), a work associated with both the stage and later print editions. Project Gutenberg credits him, along with Harold Owen, on the play behind the book version, which helped preserve his name for modern readers.
Reliable biographical detail beyond those basics is limited in the sources I could confirm here, so this overview stays brief. I was not able to confirm a suitable portrait image from a trustworthy page, so no profile photo is included.