What about other family that is part of the household?
Includes son, daughter, stepchild, foster child, brother, sister, half brother, half sister, stepbrother, stepsister or a descendant of any of those people (e.g., a grandchild, niece or nephew) under the age of 17.The child you’re claiming must have lived with you for at least half the year and You must have provided at least half of the child’s support during the last year. You must be able to properly claim the child as a dependent.