Rowington Warwickshire...........
genuki only gives the National GAzetter of 1858 as an indicator.
the scopes for the films were as follows
Rowington
C010632 1813-1877 E010631
C010633 1877-1885 M010631 1612-1876
P010631 1612-1812 M010633 1876-1895
and as you can see the family search.org site will not have the material as early as you wish.
However the parish records are in the Warwickshire archives which if you google one can get web addie.... this will tell you how much a lookup costs for that parish......
I dont remember seeing any other info on the St Lawrence church there.
sometimes one can lucky by using "dusty docs" , enter Rowington and use the link to bring up old IGI links for the parish.... as it may have been submitted or is listed under a transcription error......
the person who answered the post seemed to think there were pages missing from the register and that is not uncommon..... so maybe while u are on the county archives site look for Bishops transcripts if they survived
2nd part..... old post office directories can be found on the historical directories site ...not complete but is worth a look OR google parishmouse , then contact Sally the site owner she may have some old directories from that area good luck