In the 1881 and 1891 census Elizabeth, the wife, is still shown as born in Marown. Also David Corrish (sic) b. 1870 has Elizabeth Quilliam for mother and Philip Corrish for father.
However Elizabeth could be Philip & Elizabeth's granddaughter. On Brian's site there is a registered birth for Ann Elizabeth Caimash on Sept 19 1879, no father given, mother Mary Caimash. This corresponds to the 1881 census where Elizabeth Comish is 1 year and a half.