If certain known grandchildren were left out of a will and non mentioned explicitly, should they be entitled to recieve benefits.

A grandparent had set up mutual funds for each grandchild when we were all born. Over the years he had set up 8 total funds for their 8 grandchildren. It was brought to their attention that an additional 4 grandchildren existed and were all around the age of teenagers. Funds were never established for these individuals and a will was amended after knowledge of their existence. In the will the language states that "for each of my now living grandchildren, i have established mutual funds" and that the "balance in each of those eight accounts shall be funded in full" by the estate if a death occurs prior to their maturity. Given that language, are the 4 additional grandchildren without mutual funds entitled to the estate establishing them and funding them in full.