Possible Clues:

• This is thrown down as a challenge
• Relative allowed to hold up golf glove
• Strong glove, thrown down in challenge
• Part of armour somewhere in Belgium once allowed
• One's on hand potentially to issue a challenge
• Grand aunt allowed metal mitten?
• It's seen as a challenge to drop great relative close to accommodation
• Item on hand grand aunt allowed
• Glove with long sleeve, thrown down challenge
• Some armour Britain lost in dreadful gun battle