Ancestral File has parents for Knut Olson Aldal who may be a different person, but in any case, his parents are:
Ole Hansson Aldal b. 1754 Aldalen, Evanger, Voss, Hordaland, d. 1840 same place; and Marjo Knutsdtr Hermundsdal born 1757 Hermundsdal, Evanger Voss, Hordaland, died 1789, Aldalen, Evanger Voss, Hordaland. .
He was born 1787 at Aldalen, Evanger Voss Hordaland and he died 1851 at the same geographic location. He married Jorunn Larsdrt Meland in 1810. She was born 1779 and died 1859. They had a child, Ole Knutson Aldal in 1814 who died 1890.
The paternal grandparents are shown as Knut Olson Lavik b. 1731 d. 1771 and Marjo Johannesdtr Hermundsdal, born 1732, died 1774.