And so, beyond peradventure, I think we can safely conclude:-

Leadbelly was named Hugh after the popular gay poet Wystan Hugh Auden.
Dee after the the popular American politician Franklin D. Roosevelt.
William after the popular American outlaw Billy the Kid.
And Ledbetter after the depiction of English rose Margot Ledbetter by the ever popular Penelope Keith in the popular sitcom The Good Life.

We take these truths to be self evident.