Fam. Bakker

I am looking for my family. Probably some of them are born in Oldenburg and
Emden.
I will give you the names:
Pieter Jans Bakker, born in Oldenburg, about 1796, married with
Anna Geertruid (gertrud|)Willems de Haan, born in Emden about 1796.
They should married in 1804, this is not possible.
They had several children:
Jan Bakker, born 2-9-1817 in Emden
Wilhelm Johann Franz Bakker‏
<Genealogie Jan Bakker/Marianne Kromme - Personen,
born in Oldenburg 22-3-1820

More of my familie you can find on www.janbakker.org.

This is my first post. I don't understand how it works and I hope I do it
on the right way.

Jan Bakker