Second wife's child rights on property

legallly speaking you aunt has no right in the property of her father and ancestral property but good faith if she ask them the share they will give because here as per your query your aunts father has not taken any divorce from his first wife

olny oral consent and he married your aunts mother 

Dear one NP,

The marriage of your aunt's mother was during subsistence of earlier marriage.  So, it is void in the eye of law.  The children begotten i.e. your aunt out of the said void marriage are illegitimate.

According to law, illegitimate children are entitled to succeed to the self acquired property of the father.  But, they are not entitled to any share in ancestral property.

So, your aunt is entitled to a share in the self acquired property of her father along with other children.

Yes your aunt is illegitimate  child of her father so she is only entitled to get share from self acquired property of her father and not entitled to get anyshare in ancestral property.

Right only in self acquired property of father not otherwise

Hi Experts,

Thankyou all for your reply.

We enquired and now we came to know that my aunt's father has made a registered will in favour of son for his selfacquired property.