Limitation plays vital role in your case.
It is a partition of 1957. You not clearely mentioned the date of entry of your elder brother's sons.
B,C and D will have to file suit for declaration Limitation is 3 years from the date of denial.
To prove their case they will hve to produce the partition deed.
To bring in to the limitation they will have to take the contention that recently we came to know that behind the back of us sons of A have sold our share without having legal right or tittle over the suit properties.
The name entered to the suit properties are stray entries, such entries have not valid in the eye of law.
it is necessary to show that suit properties are in the possession of the b.c and d.
it is also necessary to take the contention that sales by the sons of A are not binding on us.