I really like this picture because of the ideas that it brings to mind. Who is the boy? Who did the sword and shield belong to? Maybe he's a prince or the son of a noble (a Duke or Baron) who's father has been killed in a far off battle and the weapons are being bequeathed to him as his inheritance? Another approach is that they were made for him after he was born and he's reached that age where he's to start training to fight for his father or monarch.