Updated 30 May 2013

Colquhoun's, Calhoun's, Cahoon's, Colhoun's etc throughout the world who have reached a dead-end in the traditional paper research to determine who their ancestors are should be able to establish a closer relationship through Y-chromosome DNA male testing.

To connect family lineage through Y-DNA test results, AND your own family research with your oldest known Colquhoun, either Irish or Scottish ancestor. To help accomplish this, your Group Administrator will require that each testor sign the Release Form to allow sharing of your test results.