Head of Family, Generally

The phrase "head of a family," as used in this Chapter, includes within its meaning:

(a)the husband or wife when the claimant is a married person.

(b)every person who has residing on the premises with him or her, and under his or her care and maintenance, either;

(1)his or her minor child, or minor grandchild, or the minor child of his deceased wife or husband;

(2)a minor brother or sister, or the minor child of a deceased brother or sister;

(3)a father, mother, grandfather or grandmother;

(4)the father, mother, grandfather or grandmother of a deceased husband or wife;

(5)an unmarried sister or brother, or any other of the relatives mentioned in this Section, who have attained the age of majority, and are unable to take care of or support themselves.