My grandfather is Roger L Burnikel His Cousins were Hagglund's on his mother's side. His Uncle was Oscar and his cousin who was is the war with him and died serving in WWII was Eddy Hagglund. Oscar's wife's name was May (Mayal?) I think that Oscar may have been Hilda's brother. Not sure though because I cannot see my tree while writing here.
Good luck!
Robyn Hoff Lund