The birth of Mark Harmon

Mark Charles Harmon was born on April 21, 1951 in San Joaquin County, California.

His father's last name is Harmon, and his mother's maiden name is Paul. If Mark is still alive, he's now years old.

His potential siblings include Richard (born 1944), Korokay (born 1960), Gregory (born 1949) and Karen (born 1961).