Question: When did Vivion De Valera's father die?
Sentence (from "Vivion de Valera"): Vivion Laurence de Valera (13 December 1910 – 16 February 1982) was an Irish Fianna Fáil politician, businessman and lawyer who served as a Teachta Dála (TD) from 1945 to 1981.
Relevant evidence: No