This is probably too late to be of use, but I have some information on the Randles family of Carreghofa. Several were millers.
There was an elder Thomas, died around 1844. One of his children was Rosamund (born 1813) who married William Jones around 1837. Thomas the elder married Elizabeth Onslow of Shawbury, Salop in 1797. Rosamund's elder sister Elizabeth (b.1810) married David Williams, a blacksmith (my GGG grandparents.)
Thomas had a son Thomas, born around 1801, who married Elizabeth Tudor of Oswestry in 1830.