According to the regulation of our country inheritance act, successive have a will successive, bequeath and legal and successive.
Former will inheritsSo the description according to you, if press former testamentary to ask to give an uncle house property, so the wife of your uncle and child are OK subrogation accedes the house property of your grandfather.
Legal and successiveIf your grandfather prepares to leave your father the room, perhaps can change the will cancel that did not pass notarization formerly.
After cancel, if do not have new will, the grandfather's bequest will according to legal and successive, house property is met by your grandma (still alive) , the wife of father, uncle and child (subrogation uncle is successive) equational bequest.
The will inheritsIf the grandfather hopes house property leaves your father, the grandfather can write a will through the book, show the house accedes by one person of your father.
On testamentary effectiveness problem, according to the provision that judicatory of our country inheritance act explains, the will of different form allows with be through notarial will, without notarial testamentary, it is with what making a will finally accurate.
Accordingly, for needless dispute, suggest your grandfather goes having notarial will, show house property accedes by your father.
According to the regulation of our country inheritance act, the will ought to have the heir of source of income to retain necessary bequest share to lacking labor capacity. Accordingly, according to the particular case of the wife of your uncle and child, if they all do not have force of fatigue kinetic energy,also do not have source of income ought to be them to preserve the heritage of partial share.