Question: What is the date of birth of Richard Taaffe's father?
Sentence (from "Richard Taaffe"): In October 1945, he discovered the very rare mineral Taaffeite (Mg 3 Al 8 BeO 16, also known as Magnesiotaaffeite, 2N'2S), which was later named after him: Taaffe had a large number of old cut gems obtained from the Dublin jeweller Robert Dobbie, extracted from old jewellery.
Relevant evidence: No