My father is dead & now the creditor wants to recover from Ancestral

My father left our family around 10years back before the illegal transaction and was living separately and had many bad habits like gambling and prostitute connections. My mother had filed a case against my father for maintenance and not divorce. As my father was a government employee and when he took Voluntary Retirement, some portion was held by the court for the maintenance of us and we won it. Keeping this point in mind the creditor pointed out to the trial court that we are the legal heirs and got the decree against us. My question is: When my father is dead, does his portion in the ancestral property be represented as mine and not my father’s anymore? Can I argue this in court? And so can I claim that there shouldn't be any recovery on the ancestral property for my father’s debt?