August Amundsen ???

Looking for info regarding August Amundsen born May 1868 Norway. Immigrated to the US in 1892. Naturalization records indicate his residence, or perhaps just port of departure, was Kristiania (present day Oslo). Married Ida Reinhardt abt 1896; children Cornelius Alfred Amundsen, Arthur Amundsen and Madeline Amundsen born in New York. According to 1900 US Census, lived in Westchester County (NY) and was employed as a barber. Rumor has it that he may have headed west, for/toward Alaska, abt 1905 while wife and children remained in New York. Ida's family -- parents Jacob and Caroline Reinhardt born in Prussia; siblings Elizabeth, Mary, Catherine, Caroline, Charles and Margaret born in New York. Sibling Caroline Reinhardt married Max E. Gunther born in Virginia. ANY leads/assistance greatly appreciated!