handle to (one's) name
1. A title added before one's name, as may indicate one's position, profession, or rank. The disgraced doctor was stripped of his medical license and the handle to his name. After marrying the duke, it took some time to get used to having a handle to my name.
2. A nickname or sobriquet. Because of my need for glasses, I had a handle to my name all throughout elementary school: Four Eyes. The Big Apple been the handle to New York City's name since the 1920s.