Maria O'Grady (1791-1854) (1791–1854) Parents Katharine Waller Standish O'Grady, 1st Viscount Guillamore Children Emily Henrietta Vereker Standish Prendergast Vereker, 4th Viscount Gort Maria Corinna Vereker John Prendergast Vereker Henry Prendergast Vereker Richard Prendergast Vereker Adolphus Edward Prendergast Vereker Siblings Waller O'Grady William O'Grady Richard O'Grady Standish O'Grady, 2nd Viscount Guillamore Thomas O'Grady James O'Grady John O'Grady Isabella O'Grady Katherine O'Grady Julia O'Grady Henrietta O'Grady Partners John Vereker, 3rd Viscount Gort