Wetjen's from Elsfleth, Germany

I was wondering if someone could look in the church books or microfiche for all information regarding the Wetjen family from Elsfleth, Germany. We have bits and pieces of information from there it would be great to fill in all the missing pieces.
The family would be the Johann Diedrich Wetjen family.

Johann Diedrich Wetjen b.18 Jan 1848 in Eckfleth, Germany married Margaret Caroline Muller-Bullenhagen date unknown.
Margarete was born 18 Sept. 1857
They had 4 children 2 died at a young age we were told. The other two childrens names are Sophia Henderikka Wetjen born 10 Mar 1883 and Heinrich Wilhelm Wetjen born 15 June 1886 my GGrandfather.

If someone could let us know all the information on this family it would be greatly appreciated. Thanks Erik Wetjen