Craig of Antrim

[nimrodic]

Hi,
  I am looking for the roots of Israel Craig born c1850 in Antrim.On the 1871 census of England he lived in Salford, Lancashire.He worked in the cotton/flax industry and married an Elizabeth from Knutsford,Cheshire.
   Israel had a son and a grandson of the same name so it could be a family thing.
I know there are a lot of Craigs and Antrim is a big place but it is all I have to go on so any info will be appreciated.
                                            Les