question: When did Vithoji Rao Holkar's father die?
context: Title: Vithoji Rao Holkar
  Passage: Shrimant Sardar Vithoji Rao Holkar( 1776 – 16 April 1801), was the fourth son of Sardar Tukoji Rao Holkar. He also known as Vithoba.
  Title: Tukoji Rao Holkar
  Passage: Shrimant Subadar Tukoji Rao I Holkar IV Bahadur (26 kule 1723 – 15 August 1797), belonging to the Holkar clan of the Marathas was the feudatory of Indore (r. 1795–1797). He was second son of Shrimant Tanuji Holkar. He married two wives. He had four sons Malharrao (II), Kashirao, Vithojirao & Yashwantrao Holkar.
answer: 15 August 1797
citations: Tukoji Rao Holkar Vithoji Rao Holkar