Looking for Swarbrick S of Salford Lancashire

I believe I have traced my family as far back as 1766 with Peter Swarbrick who married Betty Shalcross in that year
I can, however, find no other Swarbrick prior to Peter in the Salford/Manchester area that are related to him I
Suspect that he came into Salford from Chorley in Lancashire but have no proof of it as yet.