Debbie is an Honorary Research Associate in the Department of Genetics, Evolution and Environment at University College London. She is a member of ISOGG and the co-founder of the ISOGG Wiki. She is the administrator of the Cruwys/Cruse/Cruise DNA Project, the Devon DNA Project and the mtDNA Haplogroup U4 Project. She has written two books for the History Press: DNA and Social Networking (2011) and The Surnames Handbook (2012). Her popular blog Cruwys News was originally set up to publish findings from her one-name study but is now focused on keeping up with all the latest developments from the world of genetic genealogy.