Second cousins share a pair of great grandparents, while third cousins share great great grandparents.
Let's hope that this person responds to my request to communicate. Absent an adoption or non-paternal event, we should be able to figure out the connection.
|Relative Finder top genetic matches for my third cousin, R.S. at 23andMe.|
This mystery person could be a closer match than my father and R.S.