Game prince over how he addressed Mary de Bohun? (5)
I believe the answer is:
halma
'game' is the definition.
(board game)
'prince over how he addressed mary de bohun?' is the wordplay.
I cannot quite understand how this works, but
'prince' could be 'hal' (Shakespearean nickname of Henry V when a prince) and 'hal' is present in the answer.
The remaining letters 'ma' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for halma that I've seen before include "Leaping board game" , "Old board game" , "Hopping board game" , "played on board" , "Board-game" .)