The names Markos and Marko are both derived from the same root.

Marko is a common nickname for Mark.

Marko is a popular name for boys in many Slavic countries.

Markosian is a common Armenian surname.

The Markosians are a group of philosophers who believe in the doctrine of eternalism.

The Markosyans are a well-known family in the neighborhood.

My friend's last name is Markosyan.