In the following examples:
A boy with blue eyes and black tshirt stood in the corner.
An old man who knew how to live a life the right way looked through the window.
What would you call these phrases?
with blue eyes and black tshirt
who knew how to live a life the right way
I understand they are part of the subject. What would you call them when you do a grammatical analyses?
Also is there a list of patterns to form phrases like these?
I can create lots of variations and all will start from the words 'with' or 'who'. I suspect there are more ways to create phrases like these.