Does brothers have share in elder's brothers property?

case history in brief...Grand Father (land approx. 10 acre + old house): he had 3 sons (elder son was in govt service and other two sons was in agriculture works). Elder son was only a person who had taken all the responsibility for fulfill the needs of the entire family member. He had build a new home at place after destroy old home & did all expense in his sisters marriage. No any income from the agriculture. After his death, his brother's family asking for shares in all assets which was made by elder brother. I think the assets made by elder brother should go to his family. Please advise!!