Thomsen, Herluf Vad (1900-1987) was a radio operator and organist in Fredericia, Denmark about 1948, folk musician, arranger and composer.
Among folk musicians he is highly reputated for his two volumes (more than 700 dance-tunes) of arrangements for Quartet (2 violins, Clarinet in A and stringbass).
Source: Arne Dich: Biographical notes in his edition of Wind quintet