We found a nickname

Conversation before dinner:

Ev: "My brother's Jonathan Blewis."
Clare: "No. Jonathan Lew-is. She sometimes says it wrong. Maybe it's too long for her. Ezelyn, you can just say 'Jonathan'."

Conversation after dinner:
Aunt Carrie: "What color are carrots?"
Ev: "Pink!"
Aunt Carrie: "No, carrots!"
Ev: "Orange."
Aunt Carrie: "What color is Jonathan?"
Ev: (Pauses) "Jonathan Blue-ass."
[Aunt Carrie begins to laugh uncontrollably.]