Throughout the year, the Society hosts a variety of genealogy related programs and events  designed for all levels across a broad selection of topics. For more information about a particular program, meeting, or event, please visit the specific page related to the item of interest.

NSDCGS Calendar


Loading Events

« All Events

  • This event has passed.

DNA Interest Group (DIG)

September 16 @ 1:00 pm - 4:00 pm

Carol Isbister Rolnick

Carol Isbister Rolnick

Today’s program is “Mirror Trees Explained,” presented by Carol Isbister Rolnick

Uncover the mystery of how you relate to DNA matches, even if you don’t have a tree or recognize any names in their tree! For unknown family searches, the methodology of building “Mirror Trees” and following Ancestry’s “Shared Ancestor Hints” has proven to be a hugely successful tool, but it’s also useful for those simply trying to identify how unknown DNA matches relate to you.

We’ll discuss when and how to use Mirror Trees, and why they are so effective. Learn best practices developed by the experienced DNA Detectives Team, and follow along step-by-step as Carol demonstrates how to use this powerful technique.

Speaker Biography

Carol Isbister Rolnick earned her BS in Business from Purdue University. Bitten by the genealogy bug from an early age, Carol discovered an even greater passion for genetic genealogy beginning in the very early days of testing. The field satisfies her love of science, big data and an insatiable desire to help others solve personal mysteries. In addition to her work with The DNA Detectives, Carol has an independent consulting company, Rolnick Research.

Mission: To educate and inform people about the use of DNA testing for genealogical purposes.
Description: Lectures on DNA plus small group discussions and individual help with DNA results.
Frequency: Meetings once a month, 1pm-4pm on the third Saturday of each month except December, in the community room at the Cole Library.

For further information please contact:
Kathleen Isabelle Tifft Cooper, Co-Chair,
Teri Callahan, Co-Chair,


September 16
1:00 pm - 4:00 pm
Event Category:


Kathleen Cooper


Georgina Cole Library: Community Room
1250 Carlsbad Village Drive
Carlsbad, CA 92008 United States
+ Google Map
(760) 434-2931