Question: When did Charles Ritchie Russell, Baron Russell Of Killowen's father die?
Answer: 20 December 1946

Francis Xavier Joseph Russell, Baron Russell of Killowen, PC, known as Frank Russell (2 July 1867 – 20 December 1946) was a British judge. Charles Ritchie Russell, Baron Russell of Killowen, PC (12 January 1908 – 23 June 1986) was a British judge and law lord. Russell was born in London, the son of Frank Russell, Baron Russell of Killowen and the grandson of Charles Russell, Baron Russell of Killowen, both Lords of Appeal in Ordinary