Question: When was the 7th Duke of Westminster which Gerald Grosvenor was his father born 
Sentence (from "Hugh Grosvenor, 7th Duke of Westminster"): Hugh Richard Louis Grosvenor, 7th Duke of Westminster (born 29 January 1991), styled as Earl Grosvenor until August 2016, is a British aristocrat, billionaire, businessman and landowner.
Relevant evidence: Yes