A person shall not be treated as Buddhist under sec. 2(1) of the Hindu Marriage Act, 1955, if :

Under section 2 of the Hindu Marriage Act a child with only one Hindu (including Buddhist) parent is covered only if brought up as a member of the tribe, community, group or family to which that parent belongs, so a person who is excluded is one where "His father was Christian, mother was Buddhist and he was brought up as Christian child."