Maurice Gleeson is Education Ambassador for ISOGG (International Society of Genetic Genealogy), a member of APG (Association of Professional Genealogists), and organiser of Genetic Genealogy Ireland (the annual national conference on DNA & genealogy in Ireland).

He was born in Dublin where he trained as a medical doctor. Having practised as a psychiatrist, pharmaceutical physician, and a part-time actor, he turned his attention to genetic genealogy. Maurice did his first DNA test in 2008 and has never looked back.

Now he is administrator of several Surname DNA Projects, including the Gleason, Spearin, Farrell, & O'Malley Projects. He also works with adoptees and with people of unknown parentage to help them reconnect with their biological family. In association with this work, he has appeared on Irish TV as a consultant for the TV series Adoption Stories.

He authors several blogs (DNA and Family Tree Research, Genetic Genealogy Ireland, and blogs associated with his surname projects) and is a regular contributor to genealogical magazines (Irish Roots, Irish Lives Remembered, British Connections).

His YouTube videos on genetic genealogy are very popular and have won him international recognition (his YouTube channel is called DNA and Family Tree Research).

He has organised the DNA Lectures for "Genetic Genealogy Ireland" in Dublin & Belfast since 2013, and has given talks all over Ireland, the UK, and internationally. He was voted "Genetic Genealogist of the Year 2015” (SurnameDNA Journal) and “Superstar / Rockstar Genealogist, Ireland” in 2016 and 2017 (Canada’s Anglo-Celtic Connections).