Convicted felon.
No, they may not.
Not legally. It's illegal for a felon to own a gun in any state.
In certain circumstances. A lawyer will be needed.
You need to consult a lawyer
You need to contact a lawyer to get a correct answer.
There may be a couple of small exceptions, but the answer is no.
Yes
Yes. An air rifle is not considered a firearm, thus a felons possession is not limited.
Based solely on the information provided in the question, NO, they may not legally own or possess a firearm.
You will need the services of a lawyer
No, once a felon always a felon.