Does a widow need her brother's permission to get married?

I was married before and have a son who was born within my marriage and now I am divorced and would like to remarry. However I have no relationship at all with my eldest brother who supposed to be my wakeel, as he does not acknowledge me and he even calls me a Kaafir infront of people. He always insults me infront of others. He does not greet me back when I greet him and he is also someone that had been for hajj and prays 5 times a day. He is my fathers eldest son from his first wife and I am the youngest daughter of the 2nd wife. Both my mother and our father passed on. My question is if I would like to get married, do I need his permission since I have already been married, as I am trying to be the better person but he does not allow me to as I have now decided to keep my distance from him.