Chap from Eagle Street (6)
I believe the answer is:
ernest
'chap' is the definition.
'eagle street' is the wordplay.
'eagle' becomes 'erne' (erne is a kind of eagle).
'street' becomes 'st'.
'erne'+'st'='ERNEST'
'from' is the link.
(Other definitions for ernest that I've seen before include "- Hemingway, US author" , "character for Wilde" , "Male" , "American writer . . . . . . Hemingway" , "Author Hemmingway, and Oscar Wilde's hero" .)