DUPUY, DUPUIS, DUPEE and any other reasonable spelling variations are welcome to join the project. Only males have Y-chromosomes, so only male DUPUY (or variant) can participate. If you are female, you can have a male DUPUY (or variant) relative submit a sample for your line. To participate meaningfully, testees will need to share their direct male line ancestry back to the earliest known DUPUY (or variant) as a pedigree (excluding living persons).