Not sure if your still looking but, my grandmother's family were called Roscrow originally from Cornwall but moved to Devonport I believe after my gran was born circa 1895. I have not done any real research on her side of the family but, Lillian is a firm family name, its possible my great grandparents names were William and Annie born around 1870. I found some letters after my gran died, so I know my great grandfather was in the Royal Navy and left in 1911, he then went into the fleet auxiliary, hope that is of some help.