All that can presently (June 2022) be gleaned about Nellie Cavendish from sheet music covers and by Internet searching is that she was presumably an English music hall performer who has been featured on just one work namely Pretty Kate Mahone (1891) music by Edmund Forman, words by T F Robson and published by Francis, Day & Hunter, London W.C.2, England
Surfers are welcome to contribute any further information about this performer.