first wife ( not divorced) rights on husband's ancestral and

You may post factual query.

Your father died in 1975 as per query at:

https://www.lawyersclubindia.com/forum/Father-died-how-to-partition--146357.asp

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“my father died in 1975”

Other parts of the query have also been answered in other threads initiated by you at:

https://www.lawyersclubindia.com/forum/second-wife-children-s-rights-145573.asp

Please note 1/3rd each to the first wife, and two  children of the second wife.  The second wife does not have right to have share.    

https://www.lawyersclubindia.com/forum/father-cheated-a-court-145594.asp

My father cheated a court and he got divorce. He is changed respondent's adrees.that address belongs to my father rented home.he picked my mother's notice.so we don't know.that way he got divorce in 2004.and my mother reopened that case.court cancelled his divorce in 2005.and he got second marriage in 2005 and two children's. My mother have 2 major i(son),sister(26)

https://www.lawyersclubindia.com/forum/what-is-the-section-for-cheating-a-court-146031.asp

etc etc