Inheritance

Q: If a man first married a woman and had 4 children, then divorced her and married another woman from whom he had 6 children. He had two houses, one of which he named for his second wife. Now that this man has passed away, and distribution of property has begun. Do the four children have any right over the house named in their step-mother's name? The 6 children from the second marriage say that they paid for that house so the 4 children from the first marriage have no right over it. Please can you explain what is the right way to go about this matter?

Q: My father were 4 brothers and 1 sister. As my grandfather expired at such a time where my father and his siblings were quite young, my father's eldest brother therefore took care of the family business. My grandfather owned a leather factory. Few years things were going well Alhumdulilah but later after the marriage of my father's eldest brother he deprived everybody else in the family except his mother of the income which was till now being generated from the factory. He said that because since so many years he was looking after the business therefore the factory was now his and nobody in the family was to put his claim anymore. My grandmother also supported him because she was getting her monthly expenditure from him. My father, mother and the rest of my uncles and aunt took the matter to the court but even there my eldest uncle did something because of which my parents had to withdraw the case. Since then, my parents were in a very bad financial condition and had to suffer a lot. Now the state of my family is like very hostile towards each other. My eldest uncle has now expired and his wife has taken over the business and we are still deprived of the income which is generated from the factory. This hurts my parents and many a times a fight ensues. The  daughters of my eldest uncle has abused my mother very badly and said things to her which was worst than the worst. Keeping all the situations in mind, what should we do now as we are not in talking terms with them but fear Allah's anger that if we break ties then Allah will be angry but being in talking terms with them is very tough as they even think that we are doing so in order to gain benefit from them which is not true. As they have abused my mother I just don't feel like being good towards them any more. What should be done in this case? And what is to be done with the factory thing? Don't we have any right over its income? Its been 25 years nearly since we have been deprived of our rights. 

Q: I would like to know if the marhoom used to say that when he passes away, a certain property must go to his grandsons, then is this a wasiyyat. The grandsons are not heirs.

Q: My father died leaving behind my mother, 5 daughters, 2 brothers, 2 sisters. According to sharia after deducting the burial expenses, debts and one third of the estate for bequests, the estate will be divided into 720 shares and will be distributed as follows: The wife will receive 90 shares, each daughter will receive 96 shares, each brother will receive 50 shares, and each sister will receive 25 shares.

One of the sisters died after my father’s death.

One of my uncle (father’s brother) and one sister denied taking any share.

Children of one sister who died after my father’s death are also denying taking their mother’s share.

1. What should be done?
2. Who is responsible for the division of my fathers estate?