Welcome to the Cosburn Family History Research site. This site contains information relating to genealogical and family history research into the surname Cosburn (and spelling variations) throughout the whole world.

The surname appears to originate in the Cotswolds region of England, specifically in the parish of Minchinhampton in Gloucestershire. The principle spelling variations include Cossburn, Corsburn and Colesborne. The variation Colesborne appears to be the earliest known spelling and may indicate an origin in the parish of Colesbourne in Gloucestershire. There are early occurrences of the surname in London, and during the 1800s, Cosburns and Cosburn descendants have migrated to North America, Australasia and other parts of the globe.


Visit David Cosburn's Honor Remember site which includes a list of some Cosburn descendants and some images relating to Cosburn family history. (no longer available)

Visit Peter Williams's Cosburn Family History page.

The Cosburn Mailing List

There is an email mailing list for the surname Cosburn and variants, hosted by Rootsweb (

To subscribe in list mode, send an email to with the subject subscribe.

To subscribe in digest mode, send an email to with the subject subscribe.

The Cosburn Facebook Group

There is a closed Facebook Group for the surname Cosburn and variants, see


To contact me (Peter Williams), send email to Peter J Williams .


There is an online database of records and events relating to the surname Cosburn. If you would like to contribute to the database, please send email to Peter J Williams . Contributors should note that their contributions will be made freely accessible on this web site.

View the records in the database (requires Microsoft Internet Explorer) or download a zipped delimited text file.