All that can presently (September 2023) be gleaned about G. W. Kenway from sheet music covers and by Internet searching is that he has been featured on been featured on just one work namely First, Second and Third (1891) music by William George Eaton, words by Richard Morton and published by Francis, Day & Hunter, London W.C.2, England
Various playbills and newspaper articles from the 1890's described him as a humorous mimic.
Surfers are welcome to contribute any further information about this performer.