"The Piddingtons" were actually from Australia.
There was a book simply titled "The Piddingtons", written by Russell Braddon, that was published in 1950. I haven't read the book so I can't comment on the book's contents. I do recall reading somewhere that it was a rather sensationalised biography.
John Booth published an article about "The Piddingtons" in one of his columns in "The Linking Ring". I can't recall which issue it was published in, but perhaps there is a forum member who has access to "The Linking Ring on CD-ROM". He or she may be able to provide you with a specific reference.