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Did Catherine marry in Ireland? I could not locate a Catherine McGillick marriage to a man with the surname Stanton.
Below are the likely 1901 and 1911 census records for Catherine's mother Mary and two siblings. I was not able to locate a civil death record for Catherine but her father may have died in 1883. See index record below. Eventually images for 1883 death records will be place online but for now you would have to write to the General Register Office to get a copy of the record.
NameTHOMAS GILLICKYear of Death1883Group Registration IDN/RSR District/Reg AreaNavanDeceased Age at Death34Returns Year1883Returns Quarter4Returns Volume No2Returns Page No685
Photocopies or official certificates can be obtained via the following link.