Seeking term for step-grandmother's brother I'm trying to wrap my head around this, but I have no clue what's right. Maybe it would just be classified as "no relation", but that seems wrong to me. The situation is that you have a grandfather, who remarries. I think that would be a step-grandmother, but I'm not even confident about that. It seems like a step-grandmother would actually imply that you have a step-mother or step-father, and it was _their_ grandmother. But if that's right, then would the "step-grandmother's" brother be called a "step-great-uncle", but that doesn't really capture the relationship either. Can anyone supply an appropriate term?

The Steve Morse relationship calculator suggests step-great-uncle is correct.

To see this click the buttons on that website in this order:

1. `father` or `mother` (you do not say if it is a paternal or maternal grandfather)
2. `father`
3. `wife`
4. `brother`