Rees's in Monmouth

[Rees Family]

I believe my Great Great Grand Father Thomas Rees was born 28 Dec, 1810 in Roberton Wathen (or Northam) parish, Pembrokeshire.  (1871 Wales Census, Source information:    RG10/5333,Registration district:    Pontypool ,Sub-registration district:  Pontypool 
ED, institution, or vessel:  17  ,Folio:    94  ,Page 50

  Thomas married Harriet Jones (no date) Born 31 March 1825 in Pontypool, Monmouth, Wales.
Their address in 1871 was W? High St, Trevethin parish, Monmouthshire, District 17

Their children are as follows:
Anthony B 1853, Gardiffush, Monmounth, Wales
Margaret B 5 Dec, 1854,Pontypool, Monmouth, Wales
David Thomas B 10, Jan, 1859, Varteg, Monmouth, Wales
William Henry B 12 Sept, 1866, Gamdiffaith, Monmouth, Wales

Could someone help with a lookup in the 1861 or earlier census?

Thanks in advance
Greg Rees