Hi,
I wonder if John had been in the workhouse before? In 1901 using the surname S, forename J and street Lisburn I found this person,
Surname: S
Forename: J
Street: Lisburn Road
DED: St. George's Ward Belfast
County: Antrim
Age: 63
Sex: Male
Birthplace: Belfast
Occupation: Labourer
Religion: Methodist
Literacy: Both
Marital Status: Not married
There are other entries for S, Js but this one seems the closest because of his age and that he is not married, but his religion is different so maybe not him
It might be worth searching for just initials just in case.
Regards,
Daisy