Hello Alison,
Here is an Andrew THIRKELL on the 1881 census, a patient in hospital:-
Dwelling: 26 Clayton St West
Census Place: Newcastle On Tyne St John, Northumberland, England
Source: FHL Film 1342221 PRO Ref RG11 Piece 5061 Folio 103 Page 21
Andrew THIRKELL M 35 M Newcastle On Tyne
Rel: Patient
Occ: Machinist
Harry