Question

Some people perform Shraddh for their elders who are deceased. Has Pitri Yajna anything to do with it?

Answer 1

AND

Meaning of Shradh

Shraddha, originally a Sanskrit word, is combination of two words "Sat" meaning truth and "Adhar" meaning basis. So it means anything or any act that is performed with all sincerity and faith. It is said, “Shraddhyaa Kriyate Yaa Saa”: Shradh is the ritual accomplished to satiate one’s ancestors. This ritual expresses one’s unconditional reverence towards the ancestors.