Tellefsen

I'm seeking information on a Tellef Gunerius Tellefsen born abt May1878 he came from Oyestad, Aust-Adger, Norway. He may have settled in either Brooklyn, NY or Staten Island (Richmond) NY. He may have been married to either a Jennie or Berta, and may have had children named Gil and Goodie. His siblings were Johan Martin Tellefsen (gone by "Martin) , Anders Anton Tellefsen and Anna Marie Knudsen. I know about the other siblings, but cannot find much on Tellef Gunerius Tellefsen. Any help would be appreciated. Thank you. [email hidden]