Mystery Solved

Thank you Wikipedia.com! What is the relationship between my son Evan and my cousin Su called? First cousins once removed. Wanna find out more?

Chart relationships

• My sibling has the same parents as I do (NOTE:--- half-siblings share only one parent --- step-siblings share no biological parent)
• The child of my sibling is my nephew/niece and I am his/her uncle/aunt
• The grandchild of my sibling is my grand nephew/niece and I am his/her grand uncle/aunt
• The great grandchild of my sibling is my great grand nephew/niece and I am his/her great grand uncle/aunt
• If our parents are siblings we are first cousins, and have the same grandparents
• If our grandparents are siblings we are second cousins and have the same great grandparents
• If our great grandparents are siblings we are third cousins and have the same great-great grandparents
• My first cousin's child and I are first cousins once removed to each other (one generation difference between us)
• My first cousin's grandchild and I are first cousins twice removed to each other (two generations difference between us)