My Cousin, Once Removed? What Does Once Removed Mean?

I was researching the familial link today between me and Albert J Dunlap (Chainsaw Al).  He married my grandfather's half-sister's daughter Judy Stringer.  I thought this was interesting because when I looked up what he would be to me he is the husband of my 1st cousin, once removed.   I had no idea what once removed meant but basically it means that he is one generation off.

This means that my mother's first cousin is my first cousin, but once removed.  My grandmother's first cousin would be my first cousin, but twice removed.

I hope this helps!