If the previous seller has a document that shows he bought the house from the dead person, and if he gives you his document about his deal with the dead person, then you can sue an action for transferring the deed. In addition, because the person who owns the deed is dead, your defendants will be two sons and one daughter as well as the second seller. If the previous person of you does not give you his document, first, you should prosecute him in a criminal court and use the conclusion in your action for transferring the deed.

If you have a document about other seller, yes

Hi,
It depends on the deed. If the house had an official document, you can sue an action. However, if it does not have an official document, you should have the document from before you until the person who have deed.