I worked with a girl called Murphy and while I agree it has an unusual sound, when I got to know her it seemed to fit her perfectly. I used to call her Smurfy as a nickname. She was a doll 🤗
Worked:
Knives Chau from Scott Pilgrim movie. Yes it made fun of real names of Hong Kong people which sometimes use random household objects for given names, like Fruit Chan (real singer name! No kidding!) or Race Wong, Butterfly Hu, even Oxide Pang (I did not make these up!) Knives Chau actually sounds pretty cool.
Didn't work:
Marty McFly. Marty sounds all right. But when it's Marty McFly it's just too silly to me. As if he's a character in SpongeBob SquarePants cartoon.