http://www.wisconsinhistory.org/vitalrecords/ Search for Holstrom or Holmstrom in Sawyer County.
According to a Sawyer County Historical Society index, Oscar and Jane were married Sept. 8, 1895. This notice appeared in the Sept. 12, 1895 issue of Hayward Republican newspaper.
Thurs. Jan. 9, 1896 Hayward Republicsn: Mr. and Mrs. Oscar Holstrom (sic) buried their infant child Sunday after an illness of a short duration.
Thursday, Dec. 29, 1898 Hayward Republicsn: A little boy applied for board and lodging at the home of Oscar Holstrom (sic) last Friday. This is the cause of the smile on Oscar's face.
April 6, 1905 Sawyer County Record: Born Monday, April 3, 1905, to Mr. and Mrs. Holmstrom, a boy.