“Then your failure was in arbitrarily grabbing the number 130 out of thin air.”
No. It made it seem like this drummer played that place shortly before he died, not slightly before the grandfather died.
130 was based on the drummer dying at about 80 and estimating the grandfather was about 50 when his grandson was born.
The grandfather was said to have toured “almost in the stagecoach days.” If the grandfather was born in 1891, even at fifteen that puts him in 1906. A quick web search finds motor omnibuses on the streets of London in 1902. I'm afraid I'll have to give you the benefit of the doubt.
But with your poor taste in music though; you are still a piece of work.