Hello Carol,
the adress to writre for information out of the church books of Geestedorf is:
Kirchenkreisamt Bremerhaven-Cuxhaven
Kirchenbuchamt, attn.Mr. Gnewuch
An der Muehle 10
2750 Bremerhaven
Their fees for searching are EUR 8,00 per each 15 minutes.
Regards
Albin.