If I remember correctly when Lomax (only one of them I believe) was involved at the Theatre Royal one of the "Traddies" was Rambling Jack Elliott who often shortly after would appear at the Ballads & Blues Club singing an obscure traditional number "I Belong to Glasgow". It was also around this time that Ewan and Peggy sung in a skiffle group singing such well known old folk songs as "Hard Case" and "Dirty Old Town" using the traditional line up of 5 string banjo,two guitars Clarinet, Double Bass plus two girl singers.

I realise that this precedes by a few years Jim Carroll's interest in folk music so he couldn't be there to know BUT, he probably knows someone who was.