Hindu joint family

Grandfather { late had business having 3 sons and 1 daughter 1st son helping grandfather in business and getting income 2nd son was studying doctor 3 rd son deceasesd a agricalturist leaving widow and 2 children When grandfarher was alive 1st son purchased a site from pocket money in year 1966 with help of second son who was studying doctor in different, he had some pocket money each contributed 3k and 3 k and purchased a site and made a partition deed on the same and registered 1 st son some salary from business 3k 2 nd son from his gold and some pocket money while studying in hostel 3k In 1966 they purchased There was no distpute untill grandfather and 3rd son died, Later unmarried daughter calimed the property purchased by son 1 and 2 are via JHF and partition of agricature land and filled a case, in 2006 However objection was filled by first son as kartha on behalf of son 2, and son 3rd widowed wife and there 2 children's majour, as POA was given to kartha and In objection stated that son 1 and 2 acquired self earnerd property and remaining agriculture property only to be divided Later daughter who filled case passed away, now, 3rd son deceased wife is claimming for self acquired property in 2020 Please suggest