Guardianship involves legal duties to care for someone, typically decided by a court. After the court hearing, the uncle assumed legal guardianship of the child.
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Not Parental
Guardianship may be granted to someone who is not the person's parent. Her grandmother was given guardianship although her mother was still alive.
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Time-Limited
Guardianship might have a set period and can be reviewed and changed by legal authorities. The guardianship is set to expire when he turns 18.