Partition posibilities

 Please clarify my doubt, My great grand mother had a property in her name and the same was given to her daughter which is my grandmother (First wife of my grand father)  and intern the same was settled to her children's,        
Doubt -But my doubt is my grandfather had 2 wife's, can the settled property again be partitioned between family of first wife children's and second wife children's? if done is that valid?