Genealogical study led Harry all over the place (8)
I believe the answer is:
heraldry
'genealogical study' is the definition.
'heraldry' can be an answer for 'study' (I have seen 'Study of arms' mean 'heraldry' so perhaps 'study' could also mean 'heraldry'). I'm not sure about the 'genealogical' bit.
'led harry all over the place' is the wordplay.
'all over the place' indicates anagramming the letters.
'led'+'harry'='ledharry'
'ledharry' anagrammed gives 'HERALDRY'.
Can you help me to learn more?
(Other definitions for heraldry that I've seen before include "System of coats of arms and the like" , "The study of armorial bearings" , "Armorial bearings, insignia etc" , "Armorial studies" , "The study of crests and genealogies" .)