By the name of…
Definition 1 of 1
Pro Tip 1/3Proper Names
Use it when specifying someone or something's proper name, as if announcing or clarifying it. 
There's a bakery by the name of 'Sweet Dough' on 5th Avenue.
Pro Tip 2/3Searching Context
It's used when searching for someone or something and making inquiries. 
I'm trying to locate a book by the name of 'The Hidden Garden'.
Pro Tip 3/3Name Intro
Introduces the exact name among many possible options, often in formal introductions. 
We have a guest speaker by the name of Dr. Eleanor Gayle.