Possible Clues:

• Not my or your
• The king trapped one of them
• "Some glory in __ birth ...": Shak
• Article, one by river, belonging to those people
• Plural of his or her
• "... ___ finest hour"
• Word that grammar police love because it gives meaning to there entire existence when it's they're
• '... finest hour'
• "The good is oft interred with __ bones": Shak
• For them will he succeed in the end?