Legal heir entity

The property belongs to deceased father and his wife is also died recently. Property is still in deceased father's name. One of the legal heirs, a daughter too died and she has husband, one son and one daughter. Now, when partition takes place among four brothers and deceased sister, who is supposed to sign, her living husband or her daughter or her son or all the three, the document and in whose name the share would be there. Anyone give legal advice. Thanks.