Procedure to prove death of deceased for death certificate

Dear Sir, Kindly help me regard proving death for my parents and elder brother . I am A1 . We are accused of false case 307 & 498a by bangalore session court and cases are going on from 2015. we were regular to court but last date we had not attended in month of June as before week of date my elder brother age around 37years (A4) passed away during his treatment in hospital . While reaching our native in UP for his funeral and to complete death ceremony my parents passed away due to heart attack or by shock of his elder son death. Now i am struck in my entire family responsibilities in my native place to save my rest family i.e. my brother family and kids . Where on 1st date absent only court has ordered for Appearance of Accused and NBW Now i can get only death certificate of my brother as he passed away in hospital and we had burn him in BBMP so we got receipt and all. where my parents death certificate require to apply in my native which may take longer time formalities .