Here is a simple shortcut method you can use to determine how any two people are related as cousins when they have a common ancestor. Lets say for example, your 21st great grandfather is another person's 21st great grandfather. Simply add 1 to your great grandfather's ordinal, 21+1=22. You are 22nd cousins. If, however, your 21st great grandfather is another person's 22 great grandfather, take the larger of the two ordinal numbers, in this case 22, and add 1. 22+1=23. You are basically 23rd cousins. Now take the difference in the two great grandfathers' ordinals, 22-21=1. You are one generation apart or, in genealogical terms, you are "once removed" (written as -1). Therefore, you are exactly 23rd cousins once removed (23rd -1). Again, this is a simplistic shortcut approach to finding out who is related to you and how. There are additional factors, too many to consider here, that can throw this off by a generation or more. But in most cases the results will be accurate. Just find the common ancestor between you and another--then figure out how the two of you are related. It must be the _closest_ common ancestor, so you may have to quiz each other or exchange short lists to find the right one. It does, however, beat uploading and downloading large lists, which can contain sensitive information that might be misused. Give it a try. Jim Just as an example, here is one line of my descent from John of Gaunt: John of Gaunt, Duke of Lancaster, 17th ggf John Beaufort, Earl of Somerset, 16th ggf Lady Joan Beaufort, Queen of Scotland, 15th ggm (twice through both marriages, branches to another line) Lady Anabella Stewart, Princess of Scotland, 14th ggm