Sentence:  "Is that his real name?" I asked, touching the corner of the picture. "Devil?" / "I named him <WSD>Devon</WSD> James Jordan, but my oldest―my girl Sheena―she had trouble saying <WSD>Devon</WSD> and it came out Devil, and that stuck ..." 
Meaning of the word marked with <WSD> tags:  (from=place names), or a variant of Devin.