Sarah SIAR born c1835 Lydney (General)
Looking again at the 1871 census in Warrington : 'FINKIN DAVIES' and family (as per Slowhands) is on page 25 in the Parish of St Paul's and the two brothers listed as LYAS, but look like SYAR are on the page before i.e. page 24 - so I think this could be her brothers.