Hans Hansen from Formoe or Lysagereie

I am searching for my Great grandfather's family. His name was Hans Christian Ingval Hansen, b Eiker, Buskerud 4/14/1858. Parents Hans Hansen b abt 1828 and Jorgine Christofersdtr, b Eiker 4/1/1829. Our records show her last name as Holst, although the Norwegian records I have found do not mention Holst. Her brother was Andrew Christofersen Holst b 1841 Eiker. Both Jorgine and Hans Hansen were deceased by 1865, so with Hans Hansen so common, I need help.