I have posted the 1880 Census Kewanee, Illinois, down below on the other Corkill string,

the age for,
Corkill Ester is I think, 13 at first looked like 18 but a small gap and different shape to the enumerators number 8

marriage in Maughold,

Robert Corkill and Jane Kennish 21 October 1865

Averil