How to get rid of a crazy man

I have been in a relationship with a man for 7 years who is 10 years my senior. He moved to Nashville, Tn. from Los Angeles, California to be close to his family here in Tennessee which is his hometown. After about several months into our relationship, I found out that he had a large rap sheet in Nashville and was informed by his sister (who is an attorney) that he has a history of voilence toward women. She told me that she is a victim of domestic voilence and wanted me to know so that I could get out. Hearing the information from his sister I did a background check and found out that he had committed numberous crimes of assault but they were in the late 80’s here in Tennessee. I discussed things with him and he told me that he had changed. Later in our relationship, he started becoming controlling and jealous. He became abusive and one day he pushed me down on the floor and slammed his knee in my chest. I had a gun in the house that he did not know anything about and I pulled it out on him and told him to leave my house. He did not leave but fougt me over the gun. He ended up getting the gun and I made it to my bedroom and called police. The police came and arrested me and charged me with aggravated assualt. I got 3 years probation. Later, I discovered the disparities that felons have obtaining jobs. So I started investing in real estate as a business. His sister, the attorney, wanted me to sell my real estate to her for hardly nothing which I did not do because I found a developer that paid me a fair price. It seems that every since I did not sell my property to her she has been spiteful. I decided to move on with my life but her brother keeps trying to come back into my life. He comes to my house and knocks on the door and walks around my yard. I tried to get an order of protection against him. The judge gave me a hard time and his sister (who is an attorney, who is also a victim of domestic voilence) represented him in court. The judge asked him if he would voluntarily agree to the order of protection but he did not. So we ended up going to court in December, January and February. Each time his sister would come. In Febuary, I missed the court date because I got sick and ended up in the hospital. The case was dismissed and I lost. Her brother started harrassing me. Does anyone have any advice on a civil way of dealing with this man and his sister? I don’t want to be bothered and I am tired of court.