PM sent.
I did have a folk song lined up courtesy of the Copper family of Sussex who were important for saving and publishing their family's songs. One of the prominent members of the family was a Bob. Unfortunately I ended up with less time than I thought I would have (aka life got in the way) and it needed more practice than I had time for in the end. I'll have to put it on ice for a future season.
Bobs and Bills are not very common in traditional song. William is but you banned that.