There are many Marquis families in the world and many variants for the name including Marquis; Marquess; Marquiss; Markee; Markey; Markie and Marcus. This project is a y-DNA project, which is a group of genealogy researchers who share a surname, or a significant, yDNA matches to the surname, and who join together to use yDNA testing, paper trails, and research to identify those with whom they share a common ancestor. In addition, yDNA tests cost less when you order them through a surname project at Family Tree DNA. The aim for many participants is to identify a participant who "matches" their test results, and who can help them find the paper trail that leads further back up the family tree. When the DNA information is combined with family pedigrees and other relevant information, the full power of Genetic Genealogy is utilized.