12a person from nearer the equator ?o?t?e?n?r Coud it be southerner? not sure why 16d Hat ?e?d?e?r possibly headwear or headgear? Is it headgear -anagram of rage at the end?
Do you have the correct clue for 12a astrogilly? The answer 'southerner' was given, in the link by sarumite, as a different clue to the one you have given.