1) kindly clarify on what basis you say that property is ancestral
2) property which has remained undivided for four generations is ancestral property
3) on father demise his self acquired property would devolve on his son , second wife and 4 daughters
4) you have one sixth share in property
5) you can file suit for partition to claim your share in property
6) you can execute POA in favour of your son ti file suit on your behalf
7) SC judgment is applicable only in respect of ancestral property and not for self acquired property of your father