I do not use many spaces as some system do not like them. Also note that when burning to a CD or DVD the file name length is 124 characters, and then you will get errors.
I do the following
SmithElizabethSusan-JonesDonaldThomas-1875-1933-MarCert (this allows multi marriages to be listed and with whom)
SmithElizabethSusan-1875-1933-Photo001 (this way I can have 1,000 of her)
Where possible the use of the birth-death year helps when you have the same name used over and over.
These can all be in the same folder and not have to jump around to get all of Elizabeth's images and or data files. This also allows to use SmithElizabethSusan-1875-1933-Obit for both a image of the newspaper obit and a doc of it transcribed into a word processor file.
Just use some acronyms that are very easy to be understood by other people.