A one-name study is the research into a single surname (and its variant spellings), seeking all occurrences, past and present, anywhere in the world.  There is a society, the Guild of One-Name Studies, a body of researchers who are dedicated to doing surname studies.

The Analysis of a One-Name Study is the research into surname evolution, distribution through time and location, and the connection with historical events.  Using statistical and graphic tools connected to a genealogy database, the analytic study can reveal our ancestors migration, longevity, occupations and mortality.