If this is correct, Thomas is a printer..
Westminster, London, England, Church of England Births and Baptisms, 1813-1919:
Margaret Caroline Elliott
Birth Date: Abt 1821
Baptism Date: 23 Sep 1821
Baptism Place: St Clement Danes, London
Parish as it Appears: St Clement Danes
Father: Thomas Elliott
Mother: Mary Ann Elliott
Geoff