Rights of newly born grandchild in grandfather’s self acquired property received through will

My grandfather has three sons say A, B and C. He died in the year 1951 and at that time only A is married and has a son A1. Thereafter the three brothers lived jointly. Later B and C got married and both were blessed with a son each in 1963 say B1 and C1. In 1964 the three brothers along with their minor children viz. A & A1, B & B1 and C & C1 got the properties partitioned stating that father’s self acquired property is divided as per father’s Will and each family got 3 houses (minors names also included in partition deed). Actually there is no Will but it is mentioned that property is divided as per Will. Subsequently in 1970 C has one more son C2. In 1974 C sold away the two houses that C’s family received on partition and purchased new property which is registered on C’s name. As per sale deed C sold the two houses as a guardian and on behalf of C1 and C2 who were minors. I want to know if C2 can file a partition suit for share in the new property purchased by C.