⛪ Researching Mennonite Regions of Damals Preußen (Former Prussia)
For those researching the Mennonite areas of what was once Westpreußen (West Prussia) and Ostpreußen (East Prussia), the work can be challenging. This guide outlines a thorough, exhaustive, and disciplined approach to conducting Mennonite research, emphasizing the identification of original source materials over secondary sources.
Do not confuse this approach with being easy; it is, rather, focused and rigorous.
1. Primary Research Materials
The following major genealogical resources are used for obtaining Mennonite source material, listed in order of the author's preference. This preference is based on which sources offer the most readable, clean, and original source documentation, as transcribed information is often inaccurate or incomplete.
| Rank | Resource | Access | Key Features | 
|---|---|---|---|
| 1. | Archion | Non-Free | Records are generally beautifully photographed and represent a complete collection of Eastern German Mennonite materials. Records are NOT digitally searchable, so researchers must read every record. Mennonite records found within non-Mennonite church records are often labeled Sonstiges (other or misc.). | 
| 2. | GrandMa Online (GRanDMA) | Non-Free | Contains vetted genealogical information on Mennonite and Hutterite individuals, traceable to communities in Prussia (now Poland) and South Russia (now Ukraine). Offers numerous data mining tools, but moving data to a personal tree is labor-intensive. | 
| 3. | FamilySearch | Free | Offers decent albeit rough 'digital searching' facilities, but results are not guaranteed to be either accurate or thorough. The service has numerous transcription errors. Digitally sourced information does not always provide usable links to the original source, and group trees are inherently inaccurate. | 
| 4. | Mennonitica | Free | May be the most complete set of available records, covering Eastern Prussian provinces and Poland (predominantly Dutch-descent Mennonites) and Galicia and Poland (mainly Swiss-descent Mennonites). Records are multiply imaged but not digitally searchable, requiring the researcher to read every record. | 
| 5. | Danzig Church Records | Free | Specifically contains Births, Baptisms, Marriages, and Deaths in the Danzig Church from 1665–1943, transliterated and digitized by Ernest H. Baergen. | 
| 6. | Ancestry.com | Non-Free | The source images, when provided, are often of the poorest image quality. Digital results frequently point to FamilySearch records that may be unavailable or incorrectly keyed. Group trees, image hints, and automated Birth, Marriage, and Death suggestions are frequently inaccurate or useless. | 
2. Supporting Research Materials and Gazetteers
These support websites are crucial for gaining insights into locations, distances between churches, and potential ecclesiastical search areas.
- Meyers Gazetteer: Considered the most important German gazetteer, as its goal was to list every place name in the German Empire (1871–1918). It provides the location, state, and other jurisdictions, including where the civil registry office and parishes were. The main limitation is that it does not provide the corresponding parish location if a town did not have one.
 - Kartenmeister: Offers a comprehensive database of locations East of the Oder and Neisse rivers, based on the borders of the eastern provinces in Spring 1918. It contains over 108,600 locations and tracks over 45,000 name changes.
 - Mennonite Genealogical Resources: An excellent place to acquaint yourself with all Mennonite regions, offering extensive data links. Much of the material is available in transcribed, typed, and PDF formats (often digitally searchable), though original source material is less accessible here than on Archion or Mennonitica.
 - Additional Resources: For a more exhaustive set of resources:
 
3. Where to Hunt: Specific Regions and Congregations
To research Mennonites from the specific regions of the Vistula Delta (Weichsel-Nogat-Delta), researchers must investigate all Mennonite Gemeinden (Community) records as well as Evangelical Church materials, as Mennonite records may appear in one or both locations.
The following list comprises places within the former German Kreisen (counties) of Elbing, Marienburg, and Riesenburg, as well as Mennonite areas around Königsberg, where records should be sought:
Kreis Marienburg, Riesenburg, Königsberg & Elbing (Mennonite & Evangelische Churches)
- Altfelde
 - Altmünsterberg
 - Baarenhof
 - Barendt
 - Danzig
 - Elbing
 - Elbing-Ellerwald
 - Elbing, St. Annen > Sonstige Verzeichnisse
 - Elbing, St. Marien > Sonstige Verzeichnisse
 - Fischau
 - Fürstenau
 - Fürstenwerder
 - Gnojau
 - Gross Lesewitz
 - Gross Lichtenau
 - Groß Mausdorf
 - Gross Rohdau
 - Heubuden
 - Jungfer
 - Katznase
 - Königsberg
 - Kunzendorf
 - Ladekopp
 - Lemberg
 - Liessau
 - Lindenau
 - Marienau
 - Marienburg
 - Mennoniten Gemeinde Elbing
 - Montau
 - Neukirch und Prangenau
 - Neuheide
 - Neuteich
 - Neuteich, Landgemeinde
 - Neuteich, Mennoniten
 - Neuteich, Stadtgemeinde
 - Neuwied
 - Orlofferfelde
 - Palschau
 - Petershagen
 - Plauschwarren
 - Pomehrendorf
 - Preußisch Mark
 - Reisenberg
 - Riesenburg, 1. Pfarrstelle
 - Riesenburg, 2. Pfarrstelle
 - Riesenburg, 2. Pfarrstelle Land
 - Riesenburg, 2. Pfarrstelle Stadt
 - Rosenort
 - Schadwalde
 - Schöneberg an der Weichsel
 - Schönsee
 - Stalle
 - Stalle, Stuhmer Kreis
 - Tannsee
 - Tannsee und Lindenau
 - Thiensdorf
 - Thiensdorf-Marcushof
 - Tiegenhagen
 - Tiegenhof
 - Tiegenort
 - Tragheimerweide
 - Trunz
 - Weierhof
 - Wernersdorf
 - Westpreußisches Geimeinde
 - Zeyer
 - Zweibrücken
 
Credits and Licensing
Compiled by Mark Rabideau, Opa and Professional Genealogist.
All materials licensed: Creative Commons Attribution-NoDerivatives 4.0 International License by eirenicon limited liability company.