76. Notwithstanding any provision to the contrary, a child born of a contributor or adopted by him, or who becomes a contributor’s stepchild after the contributor ceased to hold employment with his employer, shall not be entitled to an allowance referred to in this plan unless:(1) the contributor ceased to hold employment because of his death and the child was born posthumously;
(2) the contributor ceased to hold employment for a reason other than death and the child was born following a pregnancy that began prior to the date on which the contributor ceased to be employed.