Not sure this John, the slater, is right as Jessie's 1898 marriage record states her father as deceased, and the same John is shown on the 1901 census, a slater born in 1842 in Banffshire.
It wouldn't be the first time I've seen someone described as deceased on the marriage certificate of an illegitimate child, when the person concerned was still alive and kicking.
Sometimes the person who brought the child up might tell the child that the missing parent is dead, or maybe the child just decided to lie to save awkward questions.