1) Pick one of your sets of great-grandparents - if possible, the one with the most descendants.
|from a family reunion in 1923|
2) Create a descendants list for those great-grandparents either by hand or in your software program.
3) Tell us how many descendants, living or dead, are in each generation from those great-grandparents.
4) How many are still living? Of those, how many have you met and exchanged family information with? Are there any that you should make contact with ASAP? Please don't use last names of living people for this - respect their privacy.