1881 census at Gretch Voar Lonan:-
William Mylechreest 35 lead miner Lonan
Eleanor wife 35 Lonan
Edith A. 8
Catherine 6
William F. 5
Frederick T. 3
Robert W. 1
Other children came later.
If you compare the entries in IGI you will see the age discrepancy.
Eleanor Lewney appears to be the daughter of John Looney and Elizabeth Knowles from Ballacowle Lonan.
Len Faragher