Sheffield/Shuffield families are working to find DNA cousins and establish their common Sheffield/Shuffield ancestor. Your surname can be either spelling Sheffield or Shuffield. If you are a MALE with the surname Sheffield/Shuffield, please join the Y-Chromosome DNA study. If you are a FEMALE Sheffield/Shuffield family member, please spread the work to your MALE Sheffield/Shuffield relatives. Y-DNA projects can only track along the MALE family line from generation to generation as the male Y-DNA does not combine the mother and father’s DNA. Female DNA changes with each generation as it combines both the mother and father’s DNA.