Duty of child to maintain parents

(1) Every person born in wedlock has a moral obligation to maintain his father or mother, and grandfathers and grandmothers in case the father or mother or grandfather or grandmother is, by reason of old age or bodily or mental infirmity, unable to maintain himself or herself. (2) Every person not born in wedlock has a moral obligation to maintain his mother, and also the man, if any, with whom his mother openly cohabited with at the time of his birth, if that man recognized and treated him as his child during his childhood, in cases where the father or mother or that other person as aforesaid or all or any of those persons are, by reason of old age, or bodily or mental infirmity, unable to maintain himself, herself or themselves.