A friend has asked me to find a Swedish country singer of, I suppose, the 1940s or 1950s called Yogi or Jogi Jorgensen. Can anyone help, and if possible tell me where to get one of his records?

This friend is from a gloomy family whose entertainment used to be to sing, in five-part harmony, songs like "The Dungeon is Deep" or "I Traced Her Little Footprints In The Snow". She's also looking for a song about which she can only remember that it was about a cowboy by a river (dying, I think, but maybe that's just a normal assumption given her family's musical proclivities) and there was a dappled white horse involved. If anyone can follow this trail of clues and come up with a song I'd be grateful.