Stopped Edward chasing Henry (6)
I believe the answer is:
halted
'stopped' is the definition.
(halting is a kind of stopping)
'edward chasing henry' is the wordplay.
'edward' becomes 'ted'.
'chasing' means one lot of letters go next to another.
'henry' becomes 'hal'.
'ted' put after 'hal' is 'HALTED'.
(Other definitions for halted that I've seen before include "Came to a stop, ceased to move" , "Came to a sudden stop" , "Checked" , "Limped - hesitated - stopped" , "Caused to stop" .)