Looking for Falloon Family from Lurgan Ireland

I am looking for Charles Falloon b 1855 and his wife Eliza b 1836. They were married in 1884 in Lurgan and they had 2 children born in Lurgan, Sarah Ann b. 1886 and Francis b 1888. They then left Lurgan around 1889/90 and moved to Renfrewshire, Scotland where they changed the surname to Fallon and had further children. I cannot decipher Eliza's birth surname but it looks like MacCaulay or Collery. I cannot find any records of their births or any details about Charles or Eliza.
I know records have been have been destroyed but I have found a Charles Falloon in the 1821 Census who may be the father or even the grandfather of my Charles but I am unsure. Any help would be appreciated.

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