Lady Catherine Cecil (1719-1752) (1719–1752) Parents James Cecil, 5th Earl of Salisbury Anne Cecil, Countess of Salisbury Children John Perceval, 3rd Earl of Egmont Frederick Augustus Perceval Cecil Parker Perceval Philip Tufton Perceval Edward Perceval Lady Catherine Egmont Perceval Siblings Lady Anne Cecil James Cecil, 6th Earl of Salisbury Partners John Perceval, 2nd Earl of Egmont