She calls him Sammy Boy.
He often drops by for lunch. We live fairly close to the college and we have food so it only makes sense that he would swing by from time to time.
When Cordelia knows that he is on his way she flits around, running on her tiptoes, looking out the window as she waits for her uncle. When he finally arrives she calls out,"He's here!He's here! It's Sammy Boy!"
They get along quite well!