Can a second wife claim property of a husband?

House(bought in 1946) Sale deed is in 1st wife's name, but money paid by husband which is clearly mentioned in sale deed's office use column. The 1st wife has 5 children. After death of 1st wife, husband marries 2nd wife legally. The 2nd wife has 5 children. Husband dies leaving 10 children and 2nd wife. After that the 1st wife's 5 children leave the house. From past 50 years Only the 2nd wife's 5 children are living in the house paying all the taxes, electricity bills and water bills. 2nd wife dies leaving behind her 5 children and grandchildren. Also from past 50 years khata is in 2nd wife's name and sale deed still in 1st wife's name. Now the 2nd wife's grandchildren are claiming that the house belongs to their grandmother (since sale deed is in her name still). How can 2nd wife's children and grandchildren claim the house in which their are living from past 50 years.