Certainly, if they can prove to the court it would be in the best interests of the child to grant such custody.
Unless the court system is involved, and a minor is in the custody of their parents, it is only with parental consent that the minor can move out.
Generally the custodial parent only needs to request the court for a requisition order to have the underage person returned to their custody. In a case such as this one, the grandparents could contest the filing and apply for guardianship. It is likely a judge would grant guardianship under these conditions with a main factor being the reason(s) the minor moved to the grandparents residence. The mother would not be able to enlist the assistance of police or other authorities to have the minor returned to her custody, she would need to have an order from the court.
If he is legally emancipated, or both parents are deemed unfit, or if the grandparents gain legal custody, then yes.
Well, depends. Does Mom have custody? Is child under-aged?
An 18 year old is legally considered an adult.
legally yes, if you go to court and have approval from a judge
They can, though they may need someone to speak on their behalf. The case for living with your grandparents -- unless the parents approve and relinquish custody -- will have to be very strong.
A minor will need parental permission before moving.
Douglas had 8 grandchildren as of the date of his death in the year 2000
If they have decided so, yes. It's the parents who decide, not the minor.
They will take the minor into custody and return them to the parents. If they feel there is a problem, they will put them in foster care.
The court usually do not allow this unless it is a sibling and the parents are deceased or something.