Searching for Syversen family

Is there any information about Anton M Syversen B 25 Oct 1898 Nokleby Glemmen, D 15 June 1966 his brother Erling Syversen B 21 Sept 1904 Nokleby, D 30 June 1975 Their mother Augusta Christiansdatter B 19 Jan 1870. There are 4 other brothers who may have gone to America - Johan Kristian(b Feb 1896) , Sverre (b May 1893), Trygve (b Dec 1901), and Syver(b May 1907) - any information about them is appreciated. Augusta is the sister of my great grandfather Nils Peter Emil Christiansen who emigrated to Australia in 1876 on ship Herschel arriving Jan 1877 in Adelaide, South Australia