Peder Pederson was the son of Martin and Hellene (Haagensdatter) Pederson and was born Vestre Toten, Norway on 19th Apr 1859. He married Marie Christinson before 1886 probably in IL. They had the following children:
Martin born Aug 1886 in IL;
Hilda B. born Feb 1890 in SD;
Helga P. born Aug 1891 in SD;
Carl H. born Aub 1898 in SD.
They are all found in the 1900 census of Brookings Co., SD.
I can't find they after the 1910 census.

Peder's siblings were; Mathea (Mrs. Halver Halverson of Yankton); Pauline & Helmine (twins); Haaken/Hagen; Borre; and Hans Christian Pederson. They were all born in Norway. All but Helmine immigrated to America, probably before 1885.