On May 19, 2007 she married filmmaker and screenwriter Stephen Gaghan.
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A member of the prominent Standard Oil family, Mortimer is the great-granddaughter of its president Henry Morgan Tilford.
Robert Harley, 1st Earl of Oxford and Earl Mortimer | Minnie Mouse | Mortimer Wheeler | Edward Harley, 2nd Earl of Oxford and Earl Mortimer | Minnie Riperton | Mortimer | Minnie Driver | Memphis Minnie | John Mortimer | Roger Mortimer | Roger Mortimer, 1st Earl of March | Mortimer Durand | Minnie Pearl | Emily Mortimer | Edmund Mortimer | Bob Mortimer | Roger Mortimer, 1st Baron Mortimer | Minnie Vautrin | Hugh de Mortimer | Roger Mortimer of Wigmore | Ranulph de Mortimer | Minnie the Moocher | Minnie Miñoso | Edward Mortimer | Edward Harley, 5th Earl of Oxford and Earl Mortimer | Edmund Mortimer, 3rd Earl of March | Edmund Mortimer, 2nd Baron Mortimer | Blake and Mortimer | Mortimer railway station | Mortimer Common |