I'm at work now so this will be a quick answer.
You've found the same people that I have.
Both Engedalen and Bakken is not too far outside Kongsberg in a place called Jondalen. Jondalen can be tricky. The light version, it belongs to several different districts, depending on where and when in Jondalen. It may be Kongsberg, Flesberg, Sandsvær and Gransherrad
Engedalen and Bakken will usually be found in church books for Flesberg or Kongsberg. In recent times, they have their own church book for Jondalen.