Mother's property to children.

Mother can give her self acquired property as per her wish to any of the children. However all children will have equal right in property which is ancestral one. 

If she has earned these properties and by means of will or gift dead she has given to three sons of seconds marriage then nothing can be done. Other than these circumstances son from first marriage can claim his share in property.

For any other query feel free to cal me at 9456777600.

What proof you have to say that they are Ancestral properties?

How did the property go to the name of the lady in question?

If it is the question of the property of the father, then all the children i.e. children from the first marriage and second marriage will get equal share.

But if the property is that of the mother, then only the children of that mother (not of the children of some other mother) will get the share in the property.

It seems that the son whom you are talking about is the son from the first mother.  If that be so, then he will have no right or claim over the property of the second mother.

In any case, the property in question is not an Ancestral Property at all.