There are several programs you can download to "clean up" gedcom files and remove anyone born after a certain date. But they do not work well if you have incomplete information about some individuals. For example, I have an aunt with a missing birthdate, but I know she is very much alive. I also have a great-great-great-grandmother with a missing birthdate, and I am quite certain she is dead.
I wrote a custom program to clean the Calistri-Yeh genealogy database. It uses several heuristics to make reasonable estimates of missing birthdates, so I can safely remove the appropriate people while still retaining older records that are of greater genealogical use.
Copyright © 2000-2001 by Randall J. Calistri-Yeh. All rights reserved.
Version 2.02 (October 19, 2001)