1st wife, son, brother, mother
Mother's brothers son is called
Your family members are also called your relatives. You have an immediate or nuclear family and an extended family. Your immediate family includes your father, mother and siblings. Your extended family includes all of the people in your father and mother's families. You may also have a stepfamily. Your stepfamily includes people who became part of your family due to changes in family life.
These changes may include death, divorce or separation. New partnerships create new children. The new children and their relatives become part of your blended family. Some people are born into a stepfamily. Your sibling is your brother or sister.