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In page Lady Cynthia Colville:

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Colville was the third daughter of Robert Milnes, who succeeded when she was 15 months old as 2nd Baron Houghton (giving her the style "The Honourable"), by his first wife Sibyl, daughter of Sir Frederick Graham (of the Graham baronets of Netherby) and Lady Jane St Maur. She had an older sister, an older brother, and a twin sister.[citation needed]