1, Identify the most recent common ancestor of the two individuals
with the unknown relationship.
2, Determine the common ancestors' relationship to each person.
great-grandson (if using chart 1); or great-grandparent (if using
3, In the topmost row
of the chart, find the common ancestors' relationship to cousin
number one. In the far-left column, find the common ancestors'
relationship to cousin number two.
4, Trace the row and column from step 3. The square where they meet
shows the two individuals' relationship.
Relationship chart 1
Relationship chart 2