Procedure to claim share in father in law's ancestral property

My father in law's father expired when he was 7 years. His father and father's brother (uncle) were doing business together.Also they were having some ancestral property. My father in law's uncle made a partition deed when he was 11 years.In the partition deed he made four lists of properties List 1 for father in law's uncle. List 2 for my father in law List 3 for my father in law;s Grand mother List 4 to be enjoyed by my father in law and his uncle My father in laws uncle expired with out any children. My father in law was having 2 sisters and one aunt ( sister of his father also expired)) who was having 6 children .Since they were not able to amicably divide property in List 1 and List 2. they went to court. Court ordered them to divide the property equally. So my father in law got a share of this property ( 1/9th share of the property in List 1 and List2. Kindly let me whether this is self acquired property or ancestral property of my father in law. Hindu