Nam e can be Change in Aadhaar card , pan card, voter ID card not in certificates/mark sheets. And name discrepancy in certificates can be justify by affidavit that Sarwan Lal Gurjar & Shrawan Gurjar is one and same person and your father.
So will done in your mother case.
Have to apply in particular dept. which issues Aadhaar card , pan card, voter ID card.