1881 Lonan Census
, 03?11, 055, CALLIN, John James, 2 Ballamilgin Cottage, Head, Married, 50, Lead Dresser, IOM
, 03?11, 055, CALLISTER, Jane, 2 Ballamilgin Cottage, Wife, Married, 37, , IOM
, 03?11, 055, CALLIN, John, 2 Ballamilgin Cottage, Son, , 14, Scholar, IOM
, 03?11, 055, CALLIN, Sanely, 2 Ballamilgin Cottage, Son, , 8, Scholar, IOM
, 03?11, 055, CALLIN, William H, 2 Ballamilgin Cottage, Son, , 5, Scholar, IOM
, 03?11, 055, CALLIN, Alfred, 2 Ballamilgin Cottage, Son, , 3, , IOM
, 03?11, 055, CALLIN, Margaret Jane, 2 Ballamilgin Cottage, Daughter, , 1, , IOM

No doubt it was a mistake by the census taker or the transcriber.
I have a set of disks of IOM censuses given to me by a former researcher for IOMFHS, John Robinson.

I think you can assume it is Callin not Callister