anneelaine you have to stop sending me private messages

"Hi i can see what you are saying abot the signature.
it's just the age! the date of birth we have is 1897or 98 for Charles"
Maybe he lied.
That would be odd, though, since Gladys's mother was born in 1895, that he would want to seem younger than her ...
But that is just a story handed down, right?
Maybe Gladys's grandmother just didn't know and thought he looked younger than Annie her mother.
The other Charles I found, from the musical family, certainly fits better age-wise.
He was an insurance clerk at age 15 though, not working in the musical instruments business.
(His father was in that business and he had died.)
Violin maker ... boiler maker ... boiler maker is certainly a lot more likely, by the odds!