I too have WHITLEYs of Caergwrle but not much to go on. Sarah Ann WHITLEY married John BOWEN 7 March 1864, both their residence are given as Holt, both have fathers named Edward, and both fathers are labourers. Wittnesses to the marriage were Arthur Davies and John Harrison.
I have John and Sarah Ann in the 1901, 1891 and 1881 census. All in Birkenhead by this time. All give Sarah born Caergwrle c1845 (though her marriage certificate gives 1841 as her year of birth) and John born Farndon, Cheshire c1844. Their children were Henry BOWEN c1864 Farndon, Jane BOWEN c1867 Farndon, Margaret A c1870 Abermondoa, then from 1878 the rest are born Birkenhead, they also have a nephew living with them in 81 and 91 Edward WHITLEY c1882 Cefmpbedd.
I have tried looking for them in the 1871 but with no luck as of yet, Cheshire or Flintshire and can't get my hands on the 1861 yet.
Long shot I understand but any help or advice on these would be greatly appreciated.
Thanks and regards,
Lisa