Cousins: How to Count Them: Mark and Me

Here are the relations that Mark sent me and which appear earlier: Lazarus is our common ancestor.

Mark's Side	Lazarus	Jim's Side
William	Brothers	John
George	1st Cousins	John
Martin	2nd Cousins	Ira
Benjamin	3rd Cousins	NT
Martin V	4th Cousins	Lewis N Manley Sr.
Ross Holms	5th Cousins	Lewis N Manley Jr.
Stephen Homer	6th Cousins	Jim
Leslie Earl	6th Cousin Once Removed	To Me
Mark	6th Cousin 2x Removed	To Me

Here is the chart that my Sister sent me showing the relationships. This helps. But I'm not sure I've nailed it. My conjecture: Mark and I are 6th cousins, twice removed.