(Philadelphia, PA) -- A Pennsylvania great-grandmother has 100 reasons to brag. Marguerite Koller, who is 99, welcomed her 100th great-grandchild into the super-sized family as she closes in on 100-years-old herself. Making the feat even more incredible, she almost became a nun before she instead chose to marry her husband William in 1942. Kollor is the mother of 11 and grandmother of 56. Her granddaughter and the mother of the 100th great-grandchild says she and her husband named the milestone child Koller William, an homage to the baby's late great-grandfather.