Barbara, Thanks for the definition, pedigree collapse. I have always wondered what happens when you have two sisters who are your grandmothers because one's three grandsons married the other's three grand-granddaughters.. Not to mention all the children from second and third marriages who are now half siblings and also cousins. This has been enlightening. Imagine what a reunion would look like? Bob ************************************** AOL now offers free email to everyone. Find out more about what's free from AOL at http://www.aol.com.