Propert ka batwara agar vasiyat nhi he to

It is believed that you are all Hindu.

The property in the hands of deceased Grandfather was self acquired or ancestral.

Confirm!

1st  right on the property of deceased Hindu Male owner, is of ClassI legal heirs: Mother (If alive on date of), wife (If alive on date of), sons, daughters………………………..

If ClassI legal heirs are not present then ClassII legal heirs come into picture.

Was this lady in Live IN Relationship with your uncle previously married andwas his husband alive till date of death of your uncle?

Is their any child fathered by your uncle thru this Live IN Relationship?

Yes we all are Hindu and propery acquired property is ancestral

No there is no child to that lady by my uncle ......she was not with my uncle since 5 to  6 years .........dont know whether she is married to some other person or not

If your father has not fathered any child from said Live IN relationship then NO child from such relation is there to claim any share in estate of your father. So this part is made clear by you and responded to you.

It is Imp. For you to find out if the said Lady was already married while she came into said Live In relationship with your father and upto  date of death of your father.

If she was married then her claim on your father’s estate should fail.

The onus to prove it is on OP (You).

first of all he is my uncle ....am little bit confuse 

THe impressions posted in this thread initiated by you, are attempted to point to clarity.

Rest are your personal and emotional issues.

You need to deal with them.