The ballad that I was referring to is Edward.

Bronson said "Archer Taylor has argued convincingly that the ballad passed from Britain to Scandinavia". The book is "EDWARD AND SVEN I ROSENGÅRD: A STUDY IN THE DISSEMINATION OF THE BALLAD", originally published in 1931 but print-on-demand from www.kessinger.net ISBN 1432569465. (But the title on the cover has "Rosengard" rather than the correct Swedish spelling "Rosengård".)

I find it amusing that Taylor quoted the Danish, Norwegian and Swedish words without translation, apparently expecting scholars to be able to read those, but provided translations of the versions in Finnish.