Mary Jermyn Peerage person ID=630865 Parents Mary Merry Thomas Jermyn, 2nd Baron Jermyn Children Sir Robert Davers, 3rd Baronet Sir Jermyn Davers, 4th Baronet Isabella Davers Henrietta Davers Siblings Merilina Jermyn Delariviere Jermyn unknown daughter Jermyn Penelope Jermyn Partners Sir Robert Davers, 2nd Bt.