Hi Cherie
  
 I've been looking into Clifton for you.  Hopefully the following will be of help.
  
 In the 1841 census Philadelphia Clifton b 1771 in Kent (age 70) was residing in Burgate Lane, Canterbury with John Clifton b 1816 Kent a Wool Comber.  I'm assuming John was Philadelphia's grandson - the dates and ages would fit for this.
  
 There is a death record of Philadelphia Clifton in the September quarter of 1852 in Canterbury.  Again, this would fit.
  
 Regarding Philadelphia Clifton, your 4th g.grandmother, I have found eleven of the 12 children (in no particular order):
  
 ELIZA ANN - 15 Sept 1823 Sussex
 JAMES - 14 April 1825 Sussex
 EDWARD - 9 Jan 1827 Sussex
 RHODA - 10 July 1833 Sussex
 HENRY - 12 July 1831 Sussex
 MARY ANN - November 1820 Kent
 PHILADELPHIA - 26 June 1819
 ANN - October 1829 Sussex
 LOUISA - 15 May 1836 Sussex
 HARRIET - 8 January 1842 Middlehope, New South Wales, Australia
 SARAH ANN - 1838 New South Wales, Australia
  
 I am ASSUMING the twelfth child was indeed John as mentioned previously who was residing with what could be his grandmother in the 1841 census.
  
 I have also found marriages for two of the children:
  
 Eliza Ann married JOHN TUCKER on 20 January 1848 in New South Wales, Australia
 Rhoda married JAMES WEEKES in April 1850 in New South Wales, Australia
  
 A death record of Rhoda has presented itself also - 4 December 1887.
  
 Hope this information is useful to you.
  
 Kay