Question: What is the date of birth of Sir Robert Houston, 1St Baronet's wife?
Sentence (from "Edwin McAlpine, Baron McAlpine of Moffat"): Robert Edwin McAlpine, Baron McAlpine of Moffat( 23 April 1907 – 7 January 1990), grandson of Sir Robert McAlpine, 1st Baronet, was a British construction magnate who headed Sir Robert McAlpine Ltd.
Relevant evidence: No