15.—Where, in any proceedings before a court relating to the maintenance of a child or the payment of a lump sum in respect of the expenses for the birth or funeral of a child, the making of an order for the purpose of granting such maintenance or the payment of such a lump sum, as the case may be, depends on a finding that a person is a parent of the child, the court shall not in those proceedings make any such order unless it is proved on the balance of probabilities that that person is a parent of the child.