Patricia Evangeline Anne Arbuthnot (17 March 1914 - 6 October 1989), married firstly on 10 October 1933 Arthur Cecil Byron, son of Cecil Byron, by whom she had a son Darrell Byron, who died in Ireland aged two, divorcing in 1940, and married secondly in 1940 Francis Claud Cockburn of Brook Lodge, Youghal, County Cork (Peking, 12 April 1904 - 15 December 1981), and had issue
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David George Arbuthnot (7 April 1905 - 14 November 1985), eldest son of John Bernard Arbuthnot and maternal uncle of journalists Alexander Cockburn, Andrew Cockburn, and Patrick Cockburn.