Custody over a Teen
There is a teen who's mother died when he was 7, he was then living with relatives in his home state of Georgia. He has no connection to his father.
When he was going into middle school at age 13 he moved to New York to be taken care of by his grandmother.
Going into 10th grade age 15 (almost 16 the coming October) his grandmother died. He wished to stay with god parents/family friends in New York.
However his Family moved him back to Georgia. He hates it living in Georgia even after spending all of his 10th grade year down there, with his older cousin signing for custody.
Now in 11th grade and soon to be 17, he finds Georgia too intolerable to an extreme extent. However his family refuses to listen thinking he is better off living with relatives.
What can he do in order to move back to New York? What legal measures are necessary? What rights does he have as a teen to appeal the custody given to his cousin?