Was the father right to refuse to take money from the usurious bank for the purpose of marriage?

The origin of the money your father inherited: there is no objection to benefiting from it if it is offered to you and you are in need of marriage, so accept it. As for money acquired from usury, it is not permissible for you to benefit from it unless you are in need of marriage and do not possess money for the dowry and its expenses; in that case, it is permissible to take it.