Fiery person (7)
(Other definitions for hotspur that I've seen before include "Percy's name (H.IV Pt.1)" , "Violent and rash chap" , "Rash person" , "named in London team?" , "Daredevil" .)
(Other definitions for hothead that I've seen before include "Headstrong type" , "Impetuous irresponsible person" , "Excitable person" , "Person liable to get reckless impulses" , "Daredevil" .)