Speaker Bureau
NOTE: Speaker information last reviewed | updated March 2026
Welcome partner.
The IGGP Speaker Bureau is intended to be a resource for our partner societies to aid in their program planning. The listing is private and is accessible only to partner representatives using their IGGP login.
What you need to know:
- Participation as a speaker is voluntary. IGGP requires only that they present on topics related to German genealogy, history and culture. The goal is to provide a diverse speaker listing with respect to content, language, location and level of experience.
- Our speaker bureau is NOT an endorsement of anyone who is listed. If you use this listing, all arrangements are to be made privately and directly between the partner society and the speaker.
- Other than to indicate they have spoken for a partner society or IGGP conference, speakers may not use the IGGP name or logo in any marketing material.
- IGGP does ask anyone who requests to be listed which IGGP partners, if any, they have spoken to. If you are contacted as a reference, it is your decision whether to provide feedback.
- IGGP reserves the right to approve or remove speakers from this listing.
We welcome suggestions from our partners for speakers to add to this listing. A speaker may also request to be listed. Email contact information to speakerbureau@iggp.org to request the questionnaire. Questions about the Speaker Bureau may be sent to the same address.
How to find a speaker
We have listed speakers under the categories below to help you start your search. A full alphabetical listing by name is at right.
Click the heading below to expand each section. If a speaker fits the category, based on the information provided, you will have a link to that speaker’s page.
The speaker page provides more detail about areas of experience or expertise, a biography, contact information, and a list of topics offered. Please review the information carefully.
Reminder: IGGP does not endorse any speaker by listing them here and is not involved in an arrangements made between the society and a speaker.
Find a speaker by presentation language(s)
Presents in ENGLISH only:
- Warren Bittner
- Bryna O’Sullivan
- Dr. Alois Pöttker
- James M. Beidler
- Claire Gebben
- Carolyn L. Whitton (aka Carol)
- Donald P Schwert
- Dana Palmer, CG, CGL
- Staša Cvetković
- Gail S. Blankenau
- Mary Risseeuw
- Teresa Steinkamp McMillin, CG®
- Carolyn Schott
- Eric Kopittke
- Heidi Arno
- Carol Carman
- Katherine R. Willson
- Timo Kracke
- Debra A. Hoffman, PLCGS
- Dr. Michael D. Lacopo
Presents in GERMAN only:
Presents in EITHER language:
- Peter Lubrecht PhD
- Roger P. Minert
- Cosima Jungk
- GĂĽnter Ofner
- Katherine Schober
- Thomas Aigner
- Sonja Irani
- Michael AumĂĽller
- Ute Brandenburg
- Barbara Schmidt
- Andrea Bentschneider
- Joseph B. Everett
- Dr. Klaus-D. Kohrt
- Fritz Juengling Ph.D., AG®, AGL™
- Viktor Pordzik
- Theresa Berns
Other languages:
- English or Polish, Zbigniew Stettner
- English, German or French, Rolf T. Hallauer
- Spanish, English, Hebrew, Daniel Horowitz
Find a speaker by TYPE of presentation
Presents VIRTUALLY only:
Presents BOTH virtually and in-person:
- Warren Bittner
- Zbigniew Stettner
- Dr. Alois Pöttker
- James M. Beidler
- Volker Wilmsen
- Peter Lubrecht PhD
- Claire Gebben
- Carolyn L. Whitton (aka Carol)
- Roger P. Minert
- Donald P Schwert
- Cosima Jungk
- Dana Palmer, CG, CGL
- Staša Cvetković
- Gail S. Blankenau
- Daniel Horowitz
- Mary Risseeuw
- Ingo Paul
- Katherine Schober
- Thomas Aigner
- Sonja Irani
- Michael AumĂĽller
- Ute Brandenburg
- Teresa Steinkamp McMillin, CG®
- Carolyn Schott
- Barbara Schmidt
- Eric Kopittke
- Andrea Bentschneider
- Joseph B. Everett
- Heidi Arno
- Carol Carman
- Dr. Klaus-D. Kohrt
- Katherine R. Willson
- Fritz Juengling Ph.D., AG®, AGL™
- Viktor Pordzik
- Timo Kracke
- Debra A. Hoffman, PLCGS
- Dr. Michael D. Lacopo
Find a speaker by country
Located in Germany:
- Dr. Alois Pöttker
- Volker Wilmsen
- Cosima Jungk
- Ingo Paul
- Sonja Irani
- Michael AumĂĽller
- Barbara Schmidt
- Andrea Bentschneider
- Dr. Klaus-D. Kohrt
- Viktor Pordzik
- Timo Kracke
- Theresa Berns
Located in the United States:
- Warren Bittner
- Bryna O’Sullivan
- James M. Beidler
- Peter Lubrecht PhD
- Claire Gebben
- Carolyn L. Whitton (aka Carol)
- Roger P. Minert
- Donald P Schwert
- Dana Palmer, CG, CGL
- Gail S. Blankenau
- Mary Risseeuw
- Katherine Schober
- Ute Brandenburg
- Teresa Steinkamp McMillin, CG®
- Carolyn Schott
- Joseph B. Everett
- Heidi Arno
- Carol Carman
- Katherine R. Willson
- Fritz Juengling Ph.D., AG®, AGL™
- Debra A. Hoffman, PLCGS
- Dr. Michael D. Lacopo
Located elsewhere:
- Zbigniew Stettner
- Staša Cvetković, Serbia
- Rolf T. Hallauer, Switzerland
- Daniel Horowitz, Israel
- GĂĽnter Ofner, Austria
- Thomas Aigner, Austria
- Eric Kopittke, Australia
All speakers (alphabetical)
Click name to open speaker page
Thomas Aigner
Heidi Arno
Michael AumĂĽller
James M. Beidler
Andrea Bentschneider
Theresa Berns
Warren Bittner
Gail S. Blankenau
Ute Brandenburg
Carol Carman
Staša Cvetković
Joseph B. Everett
Claire Gebben
Rolf T. Hallauer
Debra A. Hoffman, PLCGS
Daniel Horowitz
Sonja Irani
Fritz Juengling Ph.D., AG®, AGL™
Cosima Jungk
Dr. Klaus-D. Kohrt
Eric Kopittke
Timo Kracke
Dr. Michael D. Lacopo
Peter Lubrecht PhD
Roger P. Minert
GĂĽnter Ofner
Bryna O’Sullivan
Dana Palmer, CG, CGL
Ingo Paul
Viktor Pordzik
Dr. Alois Pöttker
Mary Risseeuw
Barbara Schmidt
Katherine Schober
Carolyn Schott
Donald P Schwert
Teresa Steinkamp McMillin, CG®
Zbigniew Stettner
Carolyn L. Whitton (aka Carol)
Katherine R. Willson
Volker Wilmsen

