Ivar Christian Hallström, born Stockholm, 5 June 1826, died in that city on 11 April 1901 was a Swedish composer, particularly of opera. After many years neglect, Hallström’s operas were revived, in Umeå in 1986 with Bergtagna, seen also in York in 1988,[1] and Hertig Magnus at Vadstena in 1988 and 2000, also broadcast on Swedish television. Source : Wikipedia