According to a biography, I found he that his family moved to London in 1822. Since he was born in 1812, that would make Charles about 10.
The answer to number 2 would be: Ukuleles are less expensive than many other instruments.
So a quote that supports this answer would be: “After the World Wars, plastic ukuleles revitalized the declining ukulele fad by making them even more affordable to the average American.”
