As Jim said, I believe I am beginning to understand how this works. Thanks Tim for your very comprehensible explanations and to everyone for the input. For me, just now, I take away from this thread: 1. My GEDMATCH.com results are results that are true IBD and would be the best choice for working on in the immediate and foreseeable future. Am I understanding this correctly? 2. So, my initial query would be resolved by requesting those other four matches to upload their results to GEDMATCH.com. Is this correct? 3. If there was still a match with any of the four it would remain to determine all other info such as from mother or father DNA and to look for surnames in common. Neither my husband nor myself have living parents and only one living child who is not willing to do any DNA testing at all at this time. So, unless new technology is found for working with atDNA am I correct in thinking my best results would always be from a program such as GEDMATCH? I am in constant awe of the folks who post here and freely share so much knowledge. Thanks to all. Linda