Sat 16 Feb, 2019 10:30 am
Is it correct to use the commas around "Peter" in the sentence below? If so, would you please explain why the commas are needed?
My brother, Peter, is an architect.
If the information within the commas is essential to the sentence, then you should remove them.
The commas are essential. They avoid ambiguity. Without them, "my brother Peter is an architect," can be read as "my brother" being addressed about someone named Peter being an architect, as in "my brother, Peter is an architect."