Ann grimshaw birth approx 1854/55 ormskirk

[Anglosaxon]

Hi , Can anyone help , I am trying to find a definite date or place for my great grandma 4x times Ann Grimshaw formerly Robinson . I know she married William Grimshaw in 1873 at St. Paul's skelmersdale . She is supposed to be 19 then . but her husband is 20 on the marriage certificate . he was born in Glasgow in 1854 , that's why she must have been born around 1855 in ormskirk . I can follow the thread after here , but still trying to establish family . Her farther was james Robinson a tailor by trade I have looked on the parish clerks for skelmersdale , ormskirk and that area but still haven't found her . Problem is there are lots of Robinson around the lathom area near ormskirk . so I am stuck now Any would be gratefully recieved . Thanks qwackers