Yes Ashton comes under Wigan RD, 1856/57 comes before birth registrations were compulsory and resulted in a fine for the parent(s) if it went over 6 weeks, so the responsibility was with the local registrar to encourage parents to register the birth, a vicar or priest would also encourage registration but for many a baptism was still the more important registration. Ann would most likely have been baptised at St Oswalds RC Church in Ashton (I went to a funeral there last August) .
If I still worked in Wigan I could have nipped into the register office as our staff entrance was only 50 yards away and the receptionist there would always check a detail for me before issuing a certificate.
http://www.genuki.org...rfield/StOswald.shtml