The objective of this project is to shed light on some of the questions that have stumped Don Carlos family genealogists over the years. It is hoped that by capturing the Y-DNA of the “Don Carlos” variant surname families and building a Y-DNA database, we can discover commonalities in the genetic makeup, find common ancestral lines, perhaps give us a hint of a direction to look in for unanswered questions. There are quite a few different lines Don Carlos/Carloss throughout the country. By combining traditional and genetic genealogy one of our goals is to discover whether there was a common ancestor at some point; shed light on whether there is a familiar link between any of the different family branches; establish how many generations ago male ancestors shared a common ancestor; and investigate if there is any genetic basis for the tradition of Spanish origins. One of the benefits of this project is the opportunity to link with living relatives and share information. To participate meaningfully, participants will be asked to share their direct male line ancestry back to the earliest known “DonCarlos.” This is not, however, a condition for participation. Funds are available to assist anyone who needs support in order to join the project and donate a Y-DNA sample. This DNA Project is part of the Don Carlos one-name study which has been registered with the Guild of One-Name Studies, London, England. The Project's FTDNA webpage is here: http://www.familytreedna.com/public/DonCarlosCarloss/