Rights to my grandfather's asset

Hi,

My grand father has 4 sons and he as per his will in the 60s,

1. Has given life rights to his sons & after death of all the sons,
2. Has given the disposal rights to the only grand sons through the 4 sons
3. In the 70s all his daughters were married
4. Now all the sons are dead, 1 died in the 90s and 3 died after 2005
5. The one that died in the 90s, is survived by a son and a daughter (2 in total). Will the daughter of this son be entitled to a share in the property.
6. Of the 3 sons that died after the 2005 amendment  act, two sons are survived by 2 sons and a daughter (3 each) and one son is survived by two daughters.
7. In total the 4 sons of the man who wrote the will are survived by three widows, 10 children (5 grand sons and 5 grand daughters of the person who wrote the will)

Question 1: Bolded from point 5, Will the daughter of this son be entitled to a share in the property.
Question 2: Will the wifes of the dead sons have any rights to the property
Question 3: How many shares will the property be divided into, if we split the property now?